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Finding the Fourth Proportional to 238,544.28, 329,193.66 and 129,648.65

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Solution

The fourth proportional to 238,544.28, 329,193.66 and 129,648.65 is: 178,916.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,544.28 : 329,193.66 = 129,648.65 : x
  2. Step 2: Convert to fraction form
    238,544.28/329,193.66 = 129,648.65/x
  3. Step 3: Cross multiply
    238,544.28x = 329,193.66 × 129,648.65
  4. Step 4: Simplify right side
    238,544.28x = 42,679,511,961.59
  5. Step 5: Solve for x
    x = 42,679,511,961.59/238,544.28
  6. Step 6: Final answer
    x = 178,916.52

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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.