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Finding the Fourth Proportional to 239,327.88, 330,255 and 131,891.64

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Solution

The fourth proportional to 239,327.88, 330,255 and 131,891.64 is: 182,000.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,327.88 : 330,255 = 131,891.64 : x
  2. Step 2: Convert to fraction form
    239,327.88/330,255 = 131,891.64/x
  3. Step 3: Cross multiply
    239,327.88x = 330,255 × 131,891.64
  4. Step 4: Simplify right side
    239,327.88x = 43,557,873,568.20
  5. Step 5: Solve for x
    x = 43,557,873,568.20/239,327.88
  6. Step 6: Final answer
    x = 182,000.83

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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.