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Finding the Fourth Proportional to 261,250.35, 391,930.94 and 83,881.95

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Solution

The fourth proportional to 261,250.35, 391,930.94 and 83,881.95 is: 125,840.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,250.35 : 391,930.94 = 83,881.95 : x
  2. Step 2: Convert to fraction form
    261,250.35/391,930.94 = 83,881.95/x
  3. Step 3: Cross multiply
    261,250.35x = 391,930.94 × 83,881.95
  4. Step 4: Simplify right side
    261,250.35x = 32,875,931,512.53
  5. Step 5: Solve for x
    x = 32,875,931,512.53/261,250.35
  6. Step 6: Final answer
    x = 125,840.72

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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.