Finding the Fourth Proportional to 395,691.40, 593,537.10 and 115,217.80
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Solution
The fourth proportional to 395,691.40, 593,537.10 and 115,217.80 is: 172,826.70
Step by Step Solution
- Step 1: Write the proportion equation
395,691.40 : 593,537.10 = 115,217.80 : x - Step 2: Convert to fraction form
395,691.40/593,537.10 = 115,217.80/x - Step 3: Cross multiply
395,691.40x = 593,537.10 × 115,217.80 - Step 4: Simplify right side
395,691.40x = 68,386,038,880.38 - Step 5: Solve for x
x = 68,386,038,880.38/395,691.40 - Step 6: Final answer
x = 172,826.70
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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.