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Finding the Fourth Proportional to 279,006.92, 385,064.98 and 158,167.88

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Solution

The fourth proportional to 279,006.92, 385,064.98 and 158,167.88 is: 218,291.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,006.92 : 385,064.98 = 158,167.88 : x
  2. Step 2: Convert to fraction form
    279,006.92/385,064.98 = 158,167.88/x
  3. Step 3: Cross multiply
    279,006.92x = 385,064.98 × 158,167.88
  4. Step 4: Simplify right side
    279,006.92x = 60,904,911,548.84
  5. Step 5: Solve for x
    x = 60,904,911,548.84/279,006.92
  6. Step 6: Final answer
    x = 218,291.76

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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.