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Finding the Fourth Proportional to 238,728.40, 358,091.96 and 88,965.28

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Solution

The fourth proportional to 238,728.40, 358,091.96 and 88,965.28 is: 133,447.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,728.40 : 358,091.96 = 88,965.28 : x
  2. Step 2: Convert to fraction form
    238,728.40/358,091.96 = 88,965.28/x
  3. Step 3: Cross multiply
    238,728.40x = 358,091.96 × 88,965.28
  4. Step 4: Simplify right side
    238,728.40x = 31,857,751,487.15
  5. Step 5: Solve for x
    x = 31,857,751,487.15/238,728.40
  6. Step 6: Final answer
    x = 133,447.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.