Finding the Fourth Proportional to 279,143.23, 418,715.07 and 68,781.19
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Solution
The fourth proportional to 279,143.23, 418,715.07 and 68,781.19 is: 103,171.84
Step by Step Solution
- Step 1: Write the proportion equation
279,143.23 : 418,715.07 = 68,781.19 : x - Step 2: Convert to fraction form
279,143.23/418,715.07 = 68,781.19/x - Step 3: Cross multiply
279,143.23x = 418,715.07 × 68,781.19 - Step 4: Simplify right side
279,143.23x = 28,799,720,785.53 - Step 5: Solve for x
x = 28,799,720,785.53/279,143.23 - Step 6: Final answer
x = 103,171.84
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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.