Ratio Table Calculator

A ratio table lines up two matching quantities in columns, and every column is the same ratio scaled by a different number. Type the two rows with a question mark wherever a value is missing and this fills the blanks, naming the column it scaled from and the multiplier it used for each one. It also checks the columns that were already complete, and says so plainly when one of them does not fit the ratio the others agree on. A second mode builds a fresh table from a ratio, a starting multiplier and a step.