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Finding the Fourth Proportional to 219,637.94, 329,538.92 and 86,610.96

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Solution

The fourth proportional to 219,637.94, 329,538.92 and 86,610.96 is: 129,948.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,637.94 : 329,538.92 = 86,610.96 : x
  2. Step 2: Convert to fraction form
    219,637.94/329,538.92 = 86,610.96/x
  3. Step 3: Cross multiply
    219,637.94x = 329,538.92 × 86,610.96
  4. Step 4: Simplify right side
    219,637.94x = 28,541,681,785.51
  5. Step 5: Solve for x
    x = 28,541,681,785.51/219,637.94
  6. Step 6: Final answer
    x = 129,948.78

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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.