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Finding the Fourth Proportional to 541,402.20, 812,103.30 and 331,450.20

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Solution

The fourth proportional to 541,402.20, 812,103.30 and 331,450.20 is: 497,175.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,402.20 : 812,103.30 = 331,450.20 : x
  2. Step 2: Convert to fraction form
    541,402.20/812,103.30 = 331,450.20/x
  3. Step 3: Cross multiply
    541,402.20x = 812,103.30 × 331,450.20
  4. Step 4: Simplify right side
    541,402.20x = 269,171,801,205.66
  5. Step 5: Solve for x
    x = 269,171,801,205.66/541,402.20
  6. Step 6: Final answer
    x = 497,175.30

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Double scale
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Similar ratio
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1.5x scale

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.