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Finding the Fourth Proportional to 238,951, 329,752.38 and 138,349

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Solution

The fourth proportional to 238,951, 329,752.38 and 138,349 is: 190,921.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,951 : 329,752.38 = 138,349 : x
  2. Step 2: Convert to fraction form
    238,951/329,752.38 = 138,349/x
  3. Step 3: Cross multiply
    238,951x = 329,752.38 × 138,349
  4. Step 4: Simplify right side
    238,951x = 45,620,912,020.62
  5. Step 5: Solve for x
    x = 45,620,912,020.62/238,951
  6. Step 6: Final answer
    x = 190,921.62

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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.