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Finding the Fourth Proportional to 238,389.88, 329,007.20 and 137,787.88

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Solution

The fourth proportional to 238,389.88, 329,007.20 and 137,787.88 is: 190,164.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,389.88 : 329,007.20 = 137,787.88 : x
  2. Step 2: Convert to fraction form
    238,389.88/329,007.20 = 137,787.88/x
  3. Step 3: Cross multiply
    238,389.88x = 329,007.20 × 137,787.88
  4. Step 4: Simplify right side
    238,389.88x = 45,333,204,592.74
  5. Step 5: Solve for x
    x = 45,333,204,592.74/238,389.88
  6. Step 6: Final answer
    x = 190,164.13

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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.