Finding the Fourth Proportional to 261,691.08, 391,938.84 and 156,293.88
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Solution
The fourth proportional to 261,691.08, 391,938.84 and 156,293.88 is: 234,083.80
Step by Step Solution
- Step 1: Write the proportion equation
261,691.08 : 391,938.84 = 156,293.88 : x - Step 2: Convert to fraction form
261,691.08/391,938.84 = 156,293.88/x - Step 3: Cross multiply
261,691.08x = 391,938.84 × 156,293.88 - Step 4: Simplify right side
261,691.08x = 61,257,642,026.30 - Step 5: Solve for x
x = 61,257,642,026.30/261,691.08 - Step 6: Final answer
x = 234,083.80
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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.