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Finding the Fourth Proportional to 271,520.60, 407,319.30 and 84,512.60

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Solution

The fourth proportional to 271,520.60, 407,319.30 and 84,512.60 is: 126,780.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,520.60 : 407,319.30 = 84,512.60 : x
  2. Step 2: Convert to fraction form
    271,520.60/407,319.30 = 84,512.60/x
  3. Step 3: Cross multiply
    271,520.60x = 407,319.30 × 84,512.60
  4. Step 4: Simplify right side
    271,520.60x = 34,423,613,073.18
  5. Step 5: Solve for x
    x = 34,423,613,073.18/271,520.60
  6. Step 6: Final answer
    x = 126,780.85

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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.