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Finding the Fourth Proportional to 266,424.60, 399,863.70 and 108,766.20

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Solution

The fourth proportional to 266,424.60, 399,863.70 and 108,766.20 is: 163,241.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,424.60 : 399,863.70 = 108,766.20 : x
  2. Step 2: Convert to fraction form
    266,424.60/399,863.70 = 108,766.20/x
  3. Step 3: Cross multiply
    266,424.60x = 399,863.70 × 108,766.20
  4. Step 4: Simplify right side
    266,424.60x = 43,491,655,166.94
  5. Step 5: Solve for x
    x = 43,491,655,166.94/266,424.60
  6. Step 6: Final answer
    x = 163,241.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.