Finding the Fourth Proportional to 319,121.62, 478,726.20 and 141,624.70
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Solution
The fourth proportional to 319,121.62, 478,726.20 and 141,624.70 is: 212,456.47
Step by Step Solution
- Step 1: Write the proportion equation
319,121.62 : 478,726.20 = 141,624.70 : x - Step 2: Convert to fraction form
319,121.62/478,726.20 = 141,624.70/x - Step 3: Cross multiply
319,121.62x = 478,726.20 × 141,624.70 - Step 4: Simplify right side
319,121.62x = 67,799,454,457.14 - Step 5: Solve for x
x = 67,799,454,457.14/319,121.62 - Step 6: Final answer
x = 212,456.47
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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.