Finding the Fourth Proportional to 381,425.40, 572,142.42 and 115,188.12
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Solution
The fourth proportional to 381,425.40, 572,142.42 and 115,188.12 is: 172,783.48
Step by Step Solution
- Step 1: Write the proportion equation
381,425.40 : 572,142.42 = 115,188.12 : x - Step 2: Convert to fraction form
381,425.40/572,142.42 = 115,188.12/x - Step 3: Cross multiply
381,425.40x = 572,142.42 × 115,188.12 - Step 4: Simplify right side
381,425.40x = 65,904,009,732.05 - Step 5: Solve for x
x = 65,904,009,732.05/381,425.40 - Step 6: Final answer
x = 172,783.48
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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.