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Finding the Fourth Proportional to 266,622.90, 399,788.55 and 108,672.90

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Solution

The fourth proportional to 266,622.90, 399,788.55 and 108,672.90 is: 162,949.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,622.90 : 399,788.55 = 108,672.90 : x
  2. Step 2: Convert to fraction form
    266,622.90/399,788.55 = 108,672.90/x
  3. Step 3: Cross multiply
    266,622.90x = 399,788.55 × 108,672.90
  4. Step 4: Simplify right side
    266,622.90x = 43,446,181,115.30
  5. Step 5: Solve for x
    x = 43,446,181,115.30/266,622.90
  6. Step 6: Final answer
    x = 162,949.92

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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.