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Finding the Fourth Proportional to 279,135.61, 385,120.24 and 158,267.41

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Solution

The fourth proportional to 279,135.61, 385,120.24 and 158,267.41 is: 218,359.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,135.61 : 385,120.24 = 158,267.41 : x
  2. Step 2: Convert to fraction form
    279,135.61/385,120.24 = 158,267.41/x
  3. Step 3: Cross multiply
    279,135.61x = 385,120.24 × 158,267.41
  4. Step 4: Simplify right side
    279,135.61x = 60,951,982,923.38
  5. Step 5: Solve for x
    x = 60,951,982,923.38/279,135.61
  6. Step 6: Final answer
    x = 218,359.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.