Finding the Fourth Proportional to 287,064.75, 430,687.85 and 129,306.99
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Solution
The fourth proportional to 287,064.75, 430,687.85 and 129,306.99 is: 194,001.35
Step by Step Solution
- Step 1: Write the proportion equation
287,064.75 : 430,687.85 = 129,306.99 : x - Step 2: Convert to fraction form
287,064.75/430,687.85 = 129,306.99/x - Step 3: Cross multiply
287,064.75x = 430,687.85 × 129,306.99 - Step 4: Simplify right side
287,064.75x = 55,690,948,866.54 - Step 5: Solve for x
x = 55,690,948,866.54/287,064.75 - Step 6: Final answer
x = 194,001.35
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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.