Finding the Fourth Proportional to 261,474.40, 392,159.97 and 71,885.88
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Solution
The fourth proportional to 261,474.40, 392,159.97 and 71,885.88 is: 107,814.62
Step by Step Solution
- Step 1: Write the proportion equation
261,474.40 : 392,159.97 = 71,885.88 : x - Step 2: Convert to fraction form
261,474.40/392,159.97 = 71,885.88/x - Step 3: Cross multiply
261,474.40x = 392,159.97 × 71,885.88 - Step 4: Simplify right side
261,474.40x = 28,190,764,443.13 - Step 5: Solve for x
x = 28,190,764,443.13/261,474.40 - Step 6: Final answer
x = 107,814.62
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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.