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Finding the Fourth Proportional to 238,497, 329,124.78 and 136,521.90

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Solution

The fourth proportional to 238,497, 329,124.78 and 136,521.90 is: 188,399.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,497 : 329,124.78 = 136,521.90 : x
  2. Step 2: Convert to fraction form
    238,497/329,124.78 = 136,521.90/x
  3. Step 3: Cross multiply
    238,497x = 329,124.78 × 136,521.90
  4. Step 4: Simplify right side
    238,497x = 44,932,740,302.68
  5. Step 5: Solve for x
    x = 44,932,740,302.68/238,497
  6. Step 6: Final answer
    x = 188,399.60

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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.