Home / 392,821.12-589,265.62-108,511.57

Finding the Fourth Proportional to 392,821.12, 589,265.62 and 108,511.57

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Solution

The fourth proportional to 392,821.12, 589,265.62 and 108,511.57 is: 162,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,821.12 : 589,265.62 = 108,511.57 : x
  2. Step 2: Convert to fraction form
    392,821.12/589,265.62 = 108,511.57/x
  3. Step 3: Cross multiply
    392,821.12x = 589,265.62 × 108,511.57
  4. Step 4: Simplify right side
    392,821.12x = 63,942,135,828.78
  5. Step 5: Solve for x
    x = 63,942,135,828.78/392,821.12
  6. Step 6: Final answer
    x = 162,776.73

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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.