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Finding the Fourth Proportional to 392,757.05, 588,586.44 and 212,453.30

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Solution

The fourth proportional to 392,757.05, 588,586.44 and 212,453.30 is: 318,382.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,757.05 : 588,586.44 = 212,453.30 : x
  2. Step 2: Convert to fraction form
    392,757.05/588,586.44 = 212,453.30/x
  3. Step 3: Cross multiply
    392,757.05x = 588,586.44 × 212,453.30
  4. Step 4: Simplify right side
    392,757.05x = 125,047,131,513.25
  5. Step 5: Solve for x
    x = 125,047,131,513.25/392,757.05
  6. Step 6: Final answer
    x = 318,382.91

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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.