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Finding the Fourth Proportional to 392,393.30, 588,546.21 and 108,105.17

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Solution

The fourth proportional to 392,393.30, 588,546.21 and 108,105.17 is: 162,145.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,393.30 : 588,546.21 = 108,105.17 : x
  2. Step 2: Convert to fraction form
    392,393.30/588,546.21 = 108,105.17/x
  3. Step 3: Cross multiply
    392,393.30x = 588,546.21 × 108,105.17
  4. Step 4: Simplify right side
    392,393.30x = 63,624,889,556.27
  5. Step 5: Solve for x
    x = 63,624,889,556.27/392,393.30
  6. Step 6: Final answer
    x = 162,145.71

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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.