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Finding the Fourth Proportional to 252,002.20, 378,003.30 and 217,787.80

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Solution

The fourth proportional to 252,002.20, 378,003.30 and 217,787.80 is: 326,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,002.20 : 378,003.30 = 217,787.80 : x
  2. Step 2: Convert to fraction form
    252,002.20/378,003.30 = 217,787.80/x
  3. Step 3: Cross multiply
    252,002.20x = 378,003.30 × 217,787.80
  4. Step 4: Simplify right side
    252,002.20x = 82,324,507,099.74
  5. Step 5: Solve for x
    x = 82,324,507,099.74/252,002.20
  6. Step 6: Final answer
    x = 326,681.70

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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.