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Finding the Fourth Proportional to 200,507.72, 300,753.90 and 67,469.64

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Solution

The fourth proportional to 200,507.72, 300,753.90 and 67,469.64 is: 101,201.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,507.72 : 300,753.90 = 67,469.64 : x
  2. Step 2: Convert to fraction form
    200,507.72/300,753.90 = 67,469.64/x
  3. Step 3: Cross multiply
    200,507.72x = 300,753.90 × 67,469.64
  4. Step 4: Simplify right side
    200,507.72x = 20,291,757,361.60
  5. Step 5: Solve for x
    x = 20,291,757,361.60/200,507.72
  6. Step 6: Final answer
    x = 101,201.88

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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.