Finding the Fourth Proportional to 664,306.80, 996,460.20 and 221,074.80
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Solution
The fourth proportional to 664,306.80, 996,460.20 and 221,074.80 is: 331,612.20
Step by Step Solution
- Step 1: Write the proportion equation
664,306.80 : 996,460.20 = 221,074.80 : x - Step 2: Convert to fraction form
664,306.80/996,460.20 = 221,074.80/x - Step 3: Cross multiply
664,306.80x = 996,460.20 × 221,074.80 - Step 4: Simplify right side
664,306.80x = 220,292,239,422.96 - Step 5: Solve for x
x = 220,292,239,422.96/664,306.80 - Step 6: Final answer
x = 331,612.20
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.