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Finding the Fourth Proportional to 271,147.10, 406,951.05 and 218,615.90

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Solution

The fourth proportional to 271,147.10, 406,951.05 and 218,615.90 is: 328,109.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,147.10 : 406,951.05 = 218,615.90 : x
  2. Step 2: Convert to fraction form
    271,147.10/406,951.05 = 218,615.90/x
  3. Step 3: Cross multiply
    271,147.10x = 406,951.05 × 218,615.90
  4. Step 4: Simplify right side
    271,147.10x = 88,965,970,051.70
  5. Step 5: Solve for x
    x = 88,965,970,051.70/271,147.10
  6. Step 6: Final answer
    x = 328,109.61

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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.