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Finding the Fourth Proportional to 279,335.44, 385,491.65 and 158,481.82

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Solution

The fourth proportional to 279,335.44, 385,491.65 and 158,481.82 is: 218,709.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,335.44 : 385,491.65 = 158,481.82 : x
  2. Step 2: Convert to fraction form
    279,335.44/385,491.65 = 158,481.82/x
  3. Step 3: Cross multiply
    279,335.44x = 385,491.65 × 158,481.82
  4. Step 4: Simplify right side
    279,335.44x = 61,093,418,286.80
  5. Step 5: Solve for x
    x = 61,093,418,286.80/279,335.44
  6. Step 6: Final answer
    x = 218,709.87

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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.