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Finding the Fourth Proportional to 392,710.28, 589,099.19 and 108,400.86

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Solution

The fourth proportional to 392,710.28, 589,099.19 and 108,400.86 is: 162,610.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,710.28 : 589,099.19 = 108,400.86 : x
  2. Step 2: Convert to fraction form
    392,710.28/589,099.19 = 108,400.86/x
  3. Step 3: Cross multiply
    392,710.28x = 589,099.19 × 108,400.86
  4. Step 4: Simplify right side
    392,710.28x = 63,858,858,279.30
  5. Step 5: Solve for x
    x = 63,858,858,279.30/392,710.28
  6. Step 6: Final answer
    x = 162,610.61

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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.