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Finding the Fourth Proportional to 238,942.70, 329,687.97 and 138,282.38

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Solution

The fourth proportional to 238,942.70, 329,687.97 and 138,282.38 is: 190,799.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,942.70 : 329,687.97 = 138,282.38 : x
  2. Step 2: Convert to fraction form
    238,942.70/329,687.97 = 138,282.38/x
  3. Step 3: Cross multiply
    238,942.70x = 329,687.97 × 138,282.38
  4. Step 4: Simplify right side
    238,942.70x = 45,590,035,500.53
  5. Step 5: Solve for x
    x = 45,590,035,500.53/238,942.70
  6. Step 6: Final answer
    x = 190,799.03

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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.