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Finding the Fourth Proportional to 391,361.78, 587,020.18 and 232,447.13

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Solution

The fourth proportional to 391,361.78, 587,020.18 and 232,447.13 is: 348,657.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,361.78 : 587,020.18 = 232,447.13 : x
  2. Step 2: Convert to fraction form
    391,361.78/587,020.18 = 232,447.13/x
  3. Step 3: Cross multiply
    391,361.78x = 587,020.18 × 232,447.13
  4. Step 4: Simplify right side
    391,361.78x = 136,451,156,093.08
  5. Step 5: Solve for x
    x = 136,451,156,093.08/391,361.78
  6. Step 6: Final answer
    x = 348,657.34

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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.