1:5:200 is a ratio. A ratio is a comparison between two numbers or amounts. In this case, the ratio is 1:5:200. This means that for every 1 unit of something, there are 5 units of something else and 200 units of something else. For example, if you had 1 cup of sugar, 5 cups of flour and 200 cups of water, the ratio would be 1:5:200.