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Finding the Fourth Proportional to 285,679.98, 394,229.84 and 156,614.04

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Solution

The fourth proportional to 285,679.98, 394,229.84 and 156,614.04 is: 216,122.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,679.98 : 394,229.84 = 156,614.04 : x
  2. Step 2: Convert to fraction form
    285,679.98/394,229.84 = 156,614.04/x
  3. Step 3: Cross multiply
    285,679.98x = 394,229.84 × 156,614.04
  4. Step 4: Simplify right side
    285,679.98x = 61,741,927,147.88
  5. Step 5: Solve for x
    x = 61,741,927,147.88/285,679.98
  6. Step 6: Final answer
    x = 216,122.69

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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.