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Finding the Fourth Proportional to 540,123.20, 810,184.80 and 329,998.40

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Solution

The fourth proportional to 540,123.20, 810,184.80 and 329,998.40 is: 494,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,123.20 : 810,184.80 = 329,998.40 : x
  2. Step 2: Convert to fraction form
    540,123.20/810,184.80 = 329,998.40/x
  3. Step 3: Cross multiply
    540,123.20x = 810,184.80 × 329,998.40
  4. Step 4: Simplify right side
    540,123.20x = 267,359,687,704.32
  5. Step 5: Solve for x
    x = 267,359,687,704.32/540,123.20
  6. Step 6: Final answer
    x = 494,997.60

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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.