Finding the Fourth Proportional to 261,125.79, 391,688.69 and 172,358.53
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Solution
The fourth proportional to 261,125.79, 391,688.69 and 172,358.53 is: 258,537.80
Step by Step Solution
- Step 1: Write the proportion equation
261,125.79 : 391,688.69 = 172,358.53 : x - Step 2: Convert to fraction form
261,125.79/391,688.69 = 172,358.53/x - Step 3: Cross multiply
261,125.79x = 391,688.69 × 172,358.53 - Step 4: Simplify right side
261,125.79x = 67,510,887,188.26 - Step 5: Solve for x
x = 67,510,887,188.26/261,125.79 - Step 6: Final answer
x = 258,537.80
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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.