Finding the Fourth Proportional to 386,121.20, 578,836.20 and 149,385.20
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Solution
The fourth proportional to 386,121.20, 578,836.20 and 149,385.20 is: 223,944.09
Step by Step Solution
- Step 1: Write the proportion equation
386,121.20 : 578,836.20 = 149,385.20 : x - Step 2: Convert to fraction form
386,121.20/578,836.20 = 149,385.20/x - Step 3: Cross multiply
386,121.20x = 578,836.20 × 149,385.20 - Step 4: Simplify right side
386,121.20x = 86,469,561,504.24 - Step 5: Solve for x
x = 86,469,561,504.24/386,121.20 - Step 6: Final answer
x = 223,944.09
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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.