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Finding the Fourth Proportional to 178,489.40, 267,863.58 and 143,847.32

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Solution

The fourth proportional to 178,489.40, 267,863.58 and 143,847.32 is: 215,875.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,489.40 : 267,863.58 = 143,847.32 : x
  2. Step 2: Convert to fraction form
    178,489.40/267,863.58 = 143,847.32/x
  3. Step 3: Cross multiply
    178,489.40x = 267,863.58 × 143,847.32
  4. Step 4: Simplify right side
    178,489.40x = 38,531,458,108.61
  5. Step 5: Solve for x
    x = 38,531,458,108.61/178,489.40
  6. Step 6: Final answer
    x = 215,875.33

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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.