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Finding the Fourth Proportional to 391,201.20, 585,489.60 and 391,201.20

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Solution

The fourth proportional to 391,201.20, 585,489.60 and 391,201.20 is: 585,489.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,201.20 : 585,489.60 = 391,201.20 : x
  2. Step 2: Convert to fraction form
    391,201.20/585,489.60 = 391,201.20/x
  3. Step 3: Cross multiply
    391,201.20x = 585,489.60 × 391,201.20
  4. Step 4: Simplify right side
    391,201.20x = 229,044,234,107.52
  5. Step 5: Solve for x
    x = 229,044,234,107.52/391,201.20
  6. Step 6: Final answer
    x = 585,489.60

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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.