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Finding the Fourth Proportional to 381,248.01, 570,970.26 and 331,055.28

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Solution

The fourth proportional to 381,248.01, 570,970.26 and 331,055.28 is: 495,799.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,248.01 : 570,970.26 = 331,055.28 : x
  2. Step 2: Convert to fraction form
    381,248.01/570,970.26 = 331,055.28/x
  3. Step 3: Cross multiply
    381,248.01x = 570,970.26 × 331,055.28
  4. Step 4: Simplify right side
    381,248.01x = 189,022,719,295.97
  5. Step 5: Solve for x
    x = 189,022,719,295.97/381,248.01
  6. Step 6: Final answer
    x = 495,799.88

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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.