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Finding the Fourth Proportional to 543,174.20, 814,761.30 and 342,407.60

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Solution

The fourth proportional to 543,174.20, 814,761.30 and 342,407.60 is: 513,611.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,174.20 : 814,761.30 = 342,407.60 : x
  2. Step 2: Convert to fraction form
    543,174.20/814,761.30 = 342,407.60/x
  3. Step 3: Cross multiply
    543,174.20x = 814,761.30 × 342,407.60
  4. Step 4: Simplify right side
    543,174.20x = 278,980,461,305.88
  5. Step 5: Solve for x
    x = 278,980,461,305.88/543,174.20
  6. Step 6: Final answer
    x = 513,611.40

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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.