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Finding the Fourth Proportional to 239,374.62, 330,337.01 and 131,947

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Solution

The fourth proportional to 239,374.62, 330,337.01 and 131,947 is: 182,086.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,374.62 : 330,337.01 = 131,947 : x
  2. Step 2: Convert to fraction form
    239,374.62/330,337.01 = 131,947/x
  3. Step 3: Cross multiply
    239,374.62x = 330,337.01 × 131,947
  4. Step 4: Simplify right side
    239,374.62x = 43,586,977,458.47
  5. Step 5: Solve for x
    x = 43,586,977,458.47/239,374.62
  6. Step 6: Final answer
    x = 182,086.88

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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.