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Finding the Fourth Proportional to 619,252.60, 928,660.20 and 219,906.40

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Solution

The fourth proportional to 619,252.60, 928,660.20 and 219,906.40 is: 329,781.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,252.60 : 928,660.20 = 219,906.40 : x
  2. Step 2: Convert to fraction form
    619,252.60/928,660.20 = 219,906.40/x
  3. Step 3: Cross multiply
    619,252.60x = 928,660.20 × 219,906.40
  4. Step 4: Simplify right side
    619,252.60x = 204,218,321,405.28
  5. Step 5: Solve for x
    x = 204,218,321,405.28/619,252.60
  6. Step 6: Final answer
    x = 329,781.94

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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.