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Finding the Fourth Proportional to 261,531, 392,354.82 and 95,319

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Solution

The fourth proportional to 261,531, 392,354.82 and 95,319 is: 142,999.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,531 : 392,354.82 = 95,319 : x
  2. Step 2: Convert to fraction form
    261,531/392,354.82 = 95,319/x
  3. Step 3: Cross multiply
    261,531x = 392,354.82 × 95,319
  4. Step 4: Simplify right side
    261,531x = 37,398,869,087.58
  5. Step 5: Solve for x
    x = 37,398,869,087.58/261,531
  6. Step 6: Final answer
    x = 142,999.76

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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.