Finding the Fourth Proportional to 317,909.19, 476,862.57 and 81,251.49
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Solution
The fourth proportional to 317,909.19, 476,862.57 and 81,251.49 is: 121,876.92
Step by Step Solution
- Step 1: Write the proportion equation
317,909.19 : 476,862.57 = 81,251.49 : x - Step 2: Convert to fraction form
317,909.19/476,862.57 = 81,251.49/x - Step 3: Cross multiply
317,909.19x = 476,862.57 × 81,251.49 - Step 4: Simplify right side
317,909.19x = 38,745,794,337.73 - Step 5: Solve for x
x = 38,745,794,337.73/317,909.19 - Step 6: Final answer
x = 121,876.92
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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.