Home / 238,781.28-329,407.68-143,121.96

Finding the Fourth Proportional to 238,781.28, 329,407.68 and 143,121.96

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Solution

The fourth proportional to 238,781.28, 329,407.68 and 143,121.96 is: 197,442.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,781.28 : 329,407.68 = 143,121.96 : x
  2. Step 2: Convert to fraction form
    238,781.28/329,407.68 = 143,121.96/x
  3. Step 3: Cross multiply
    238,781.28x = 329,407.68 × 143,121.96
  4. Step 4: Simplify right side
    238,781.28x = 47,145,472,800.65
  5. Step 5: Solve for x
    x = 47,145,472,800.65/238,781.28
  6. Step 6: Final answer
    x = 197,442.08

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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.