Finding the Fourth Proportional to 261,937.12, 392,902.80 and 156,785.44
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Solution
The fourth proportional to 261,937.12, 392,902.80 and 156,785.44 is: 235,176.44
Step by Step Solution
- Step 1: Write the proportion equation
261,937.12 : 392,902.80 = 156,785.44 : x - Step 2: Convert to fraction form
261,937.12/392,902.80 = 156,785.44/x - Step 3: Cross multiply
261,937.12x = 392,902.80 × 156,785.44 - Step 4: Simplify right side
261,937.12x = 61,601,438,375.23 - Step 5: Solve for x
x = 61,601,438,375.23/261,937.12 - Step 6: Final answer
x = 235,176.44
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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.