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Finding the Fourth Proportional to 266,103.90, 399,219.64 and 88,612.52

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Solution

The fourth proportional to 266,103.90, 399,219.64 and 88,612.52 is: 132,940.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,103.90 : 399,219.64 = 88,612.52 : x
  2. Step 2: Convert to fraction form
    266,103.90/399,219.64 = 88,612.52/x
  3. Step 3: Cross multiply
    266,103.90x = 399,219.64 × 88,612.52
  4. Step 4: Simplify right side
    266,103.90x = 35,375,856,116.26
  5. Step 5: Solve for x
    x = 35,375,856,116.26/266,103.90
  6. Step 6: Final answer
    x = 132,940.01

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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.