CalculateRatio.cs

using System;

namespace FiguringOutRatios
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("What width do you wanna use?");

            int NewWidth = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("What height do you wanna use?");

            int NewHeight = Convert.ToInt32(Console.ReadLine());

            Calculate(NewWidth, NewHeight);
        }


        private static void Calculate(int Width = 300, int Height = 150)
        {
            Console.WriteLine("--------------");
            Console.WriteLine("--------------");
            Console.WriteLine("--------------");
            Console.WriteLine("--------------");
            Console.WriteLine("--------------");

            int OriginalWidth = 300;
            int OriginalHeight = 150;

            Console.WriteLine($"Original Size: {OriginalWidth}x{OriginalHeight}");

            float ScaleWidth = (float)Width / (float)OriginalWidth;
            float ScaleHeight = (float)Height / (float)OriginalHeight;

            Console.WriteLine("--------------");

            Console.WriteLine($"ScaleWidth: {ScaleWidth}");
            Console.WriteLine($"ScaleHeight: {ScaleHeight}");

            float Scale = Math.Min(ScaleWidth, ScaleHeight);

            Console.WriteLine("--------------");

            Console.WriteLine($"Scale: {Scale}");

            int FinalScaledWidth = (int)(OriginalWidth * Scale);
            int FinalScaledHeight = (int)(OriginalHeight * Scale);

            Console.WriteLine("--------------");

            Console.WriteLine($"Final Scale: {FinalScaledWidth}x{FinalScaledHeight}");

            Console.WriteLine("--------------");

            Console.WriteLine("What width do you wanna use?");

            int NewWidth = Convert.ToInt32(Console.ReadLine());

            Console.WriteLine("What height do you wanna use?");

            int NewHeight = Convert.ToInt32(Console.ReadLine());

            Calculate(NewWidth, NewHeight);
        }
    }
}