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Finding the Fourth Proportional to 239,481.76, 330,507.02 and 137,520.60

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Solution

The fourth proportional to 239,481.76, 330,507.02 and 137,520.60 is: 189,791.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,481.76 : 330,507.02 = 137,520.60 : x
  2. Step 2: Convert to fraction form
    239,481.76/330,507.02 = 137,520.60/x
  3. Step 3: Cross multiply
    239,481.76x = 330,507.02 × 137,520.60
  4. Step 4: Simplify right side
    239,481.76x = 45,451,523,694.61
  5. Step 5: Solve for x
    x = 45,451,523,694.61/239,481.76
  6. Step 6: Final answer
    x = 189,791.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.