Finding the Fourth Proportional to 280,981.62, 387,754.42 and 153,657.18
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Solution
The fourth proportional to 280,981.62, 387,754.42 and 153,657.18 is: 212,046.79
Step by Step Solution
- Step 1: Write the proportion equation
280,981.62 : 387,754.42 = 153,657.18 : x - Step 2: Convert to fraction form
280,981.62/387,754.42 = 153,657.18/x - Step 3: Cross multiply
280,981.62x = 387,754.42 × 153,657.18 - Step 4: Simplify right side
280,981.62x = 59,581,250,709.74 - Step 5: Solve for x
x = 59,581,250,709.74/280,981.62 - Step 6: Final answer
x = 212,046.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.