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Finding the Fourth Proportional to 279,285.80, 418,400.12 and 165,091.73

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Solution

The fourth proportional to 279,285.80, 418,400.12 and 165,091.73 is: 247,325.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,285.80 : 418,400.12 = 165,091.73 : x
  2. Step 2: Convert to fraction form
    279,285.80/418,400.12 = 165,091.73/x
  3. Step 3: Cross multiply
    279,285.80x = 418,400.12 × 165,091.73
  4. Step 4: Simplify right side
    279,285.80x = 69,074,396,725.55
  5. Step 5: Solve for x
    x = 69,074,396,725.55/279,285.80
  6. Step 6: Final answer
    x = 247,325.13

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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.