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Finding the Fourth Proportional to 238,656, 329,336.85 and 131,225.28

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Solution

The fourth proportional to 238,656, 329,336.85 and 131,225.28 is: 181,086.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,656 : 329,336.85 = 131,225.28 : x
  2. Step 2: Convert to fraction form
    238,656/329,336.85 = 131,225.28/x
  3. Step 3: Cross multiply
    238,656x = 329,336.85 × 131,225.28
  4. Step 4: Simplify right side
    238,656x = 43,217,320,355.57
  5. Step 5: Solve for x
    x = 43,217,320,355.57/238,656
  6. Step 6: Final answer
    x = 181,086.25

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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.