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Finding the Fourth Proportional to 238,570.31, 329,234.61 and 131,144.87

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Solution

The fourth proportional to 238,570.31, 329,234.61 and 131,144.87 is: 180,984.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,570.31 : 329,234.61 = 131,144.87 : x
  2. Step 2: Convert to fraction form
    238,570.31/329,234.61 = 131,144.87/x
  3. Step 3: Cross multiply
    238,570.31x = 329,234.61 × 131,144.87
  4. Step 4: Simplify right side
    238,570.31x = 43,177,428,481.78
  5. Step 5: Solve for x
    x = 43,177,428,481.78/238,570.31
  6. Step 6: Final answer
    x = 180,984.09

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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.