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Finding the Fourth Proportional to 271,229.20, 406,843.80 and 84,259.60

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Solution

The fourth proportional to 271,229.20, 406,843.80 and 84,259.60 is: 126,389.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,229.20 : 406,843.80 = 84,259.60 : x
  2. Step 2: Convert to fraction form
    271,229.20/406,843.80 = 84,259.60/x
  3. Step 3: Cross multiply
    271,229.20x = 406,843.80 × 84,259.60
  4. Step 4: Simplify right side
    271,229.20x = 34,280,495,850.48
  5. Step 5: Solve for x
    x = 34,280,495,850.48/271,229.20
  6. Step 6: Final answer
    x = 126,389.40

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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.