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Finding the Fourth Proportional to 279,229.38, 415,685.94 and 277,568.66

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Solution

The fourth proportional to 279,229.38, 415,685.94 and 277,568.66 is: 413,213.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,229.38 : 415,685.94 = 277,568.66 : x
  2. Step 2: Convert to fraction form
    279,229.38/415,685.94 = 277,568.66/x
  3. Step 3: Cross multiply
    279,229.38x = 415,685.94 × 277,568.66
  4. Step 4: Simplify right side
    279,229.38x = 115,381,389,346.64
  5. Step 5: Solve for x
    x = 115,381,389,346.64/279,229.38
  6. Step 6: Final answer
    x = 413,213.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.