Finding the Fourth Proportional to 421,440.57, 581,115.03 and 268,236.09
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Solution
The fourth proportional to 421,440.57, 581,115.03 and 268,236.09 is: 369,864.78
Step by Step Solution
- Step 1: Write the proportion equation
421,440.57 : 581,115.03 = 268,236.09 : x - Step 2: Convert to fraction form
421,440.57/581,115.03 = 268,236.09/x - Step 3: Cross multiply
421,440.57x = 581,115.03 × 268,236.09 - Step 4: Simplify right side
421,440.57x = 155,876,023,487.43 - Step 5: Solve for x
x = 155,876,023,487.43/421,440.57 - Step 6: Final answer
x = 369,864.78
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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.