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Finding the Fourth Proportional to 391,711.12, 587,156.60 and 164,137.04

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Solution

The fourth proportional to 391,711.12, 587,156.60 and 164,137.04 is: 246,033.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,711.12 : 587,156.60 = 164,137.04 : x
  2. Step 2: Convert to fraction form
    391,711.12/587,156.60 = 164,137.04/x
  3. Step 3: Cross multiply
    391,711.12x = 587,156.60 × 164,137.04
  4. Step 4: Simplify right side
    391,711.12x = 96,374,146,340.46
  5. Step 5: Solve for x
    x = 96,374,146,340.46/391,711.12
  6. Step 6: Final answer
    x = 246,033.73

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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.