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Finding the Fourth Proportional to 261,394.60, 391,854.78 and 95,065

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Solution

The fourth proportional to 261,394.60, 391,854.78 and 95,065 is: 142,511.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,394.60 : 391,854.78 = 95,065 : x
  2. Step 2: Convert to fraction form
    261,394.60/391,854.78 = 95,065/x
  3. Step 3: Cross multiply
    261,394.60x = 391,854.78 × 95,065
  4. Step 4: Simplify right side
    261,394.60x = 37,251,674,660.70
  5. Step 5: Solve for x
    x = 37,251,674,660.70/261,394.60
  6. Step 6: Final answer
    x = 142,511.26

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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.