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Finding the Fourth Proportional to 239,508.81, 330,537.65 and 132,078.51

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Solution

The fourth proportional to 239,508.81, 330,537.65 and 132,078.51 is: 182,276.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,508.81 : 330,537.65 = 132,078.51 : x
  2. Step 2: Convert to fraction form
    239,508.81/330,537.65 = 132,078.51/x
  3. Step 3: Cross multiply
    239,508.81x = 330,537.65 × 132,078.51
  4. Step 4: Simplify right side
    239,508.81x = 43,656,919,650.51
  5. Step 5: Solve for x
    x = 43,656,919,650.51/239,508.81
  6. Step 6: Final answer
    x = 182,276.88

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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.