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Finding the Fourth Proportional to 391,360.78, 587,018.68 and 232,446.13

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Solution

The fourth proportional to 391,360.78, 587,018.68 and 232,446.13 is: 348,655.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,360.78 : 587,018.68 = 232,446.13 : x
  2. Step 2: Convert to fraction form
    391,360.78/587,018.68 = 232,446.13/x
  3. Step 3: Cross multiply
    391,360.78x = 587,018.68 × 232,446.13
  4. Step 4: Simplify right side
    391,360.78x = 136,450,220,403.71
  5. Step 5: Solve for x
    x = 136,450,220,403.71/391,360.78
  6. Step 6: Final answer
    x = 348,655.84

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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.