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Finding the Fourth Proportional to 543,274.20, 814,911.30 and 243,764.55

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Solution

The fourth proportional to 543,274.20, 814,911.30 and 243,764.55 is: 365,646.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,274.20 : 814,911.30 = 243,764.55 : x
  2. Step 2: Convert to fraction form
    543,274.20/814,911.30 = 243,764.55/x
  3. Step 3: Cross multiply
    543,274.20x = 814,911.30 × 243,764.55
  4. Step 4: Simplify right side
    543,274.20x = 198,646,486,334.42
  5. Step 5: Solve for x
    x = 198,646,486,334.42/543,274.20
  6. Step 6: Final answer
    x = 365,646.83

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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.