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Finding the Fourth Proportional to 178,478.40, 267,847.08 and 143,836.32

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Solution

The fourth proportional to 178,478.40, 267,847.08 and 143,836.32 is: 215,858.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,478.40 : 267,847.08 = 143,836.32 : x
  2. Step 2: Convert to fraction form
    178,478.40/267,847.08 = 143,836.32/x
  3. Step 3: Cross multiply
    178,478.40x = 267,847.08 × 143,836.32
  4. Step 4: Simplify right side
    178,478.40x = 38,526,138,309.95
  5. Step 5: Solve for x
    x = 38,526,138,309.95/178,478.40
  6. Step 6: Final answer
    x = 215,858.83

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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.