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Finding the Fourth Proportional to 234,633.78, 351,964.36 and 90,540.36

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Solution

The fourth proportional to 234,633.78, 351,964.36 and 90,540.36 is: 135,815.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    234,633.78 : 351,964.36 = 90,540.36 : x
  2. Step 2: Convert to fraction form
    234,633.78/351,964.36 = 90,540.36/x
  3. Step 3: Cross multiply
    234,633.78x = 351,964.36 × 90,540.36
  4. Step 4: Simplify right side
    234,633.78x = 31,866,979,861.57
  5. Step 5: Solve for x
    x = 31,866,979,861.57/234,633.78
  6. Step 6: Final answer
    x = 135,815.82

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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.