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Finding the Fourth Proportional to 279,211.55, 418,817.33 and 166,923.88

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Solution

The fourth proportional to 279,211.55, 418,817.33 and 166,923.88 is: 250,385.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,211.55 : 418,817.33 = 166,923.88 : x
  2. Step 2: Convert to fraction form
    279,211.55/418,817.33 = 166,923.88/x
  3. Step 3: Cross multiply
    279,211.55x = 418,817.33 × 166,923.88
  4. Step 4: Simplify right side
    279,211.55x = 69,910,613,734.84
  5. Step 5: Solve for x
    x = 69,910,613,734.84/279,211.55
  6. Step 6: Final answer
    x = 250,385.82

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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.