Home / 392,942.18-589,439.20-143,799.14

Finding the Fourth Proportional to 392,942.18, 589,439.20 and 143,799.14

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Solution

The fourth proportional to 392,942.18, 589,439.20 and 143,799.14 is: 215,708.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,942.18 : 589,439.20 = 143,799.14 : x
  2. Step 2: Convert to fraction form
    392,942.18/589,439.20 = 143,799.14/x
  3. Step 3: Cross multiply
    392,942.18x = 589,439.20 × 143,799.14
  4. Step 4: Simplify right side
    392,942.18x = 84,760,850,042.29
  5. Step 5: Solve for x
    x = 84,760,850,042.29/392,942.18
  6. Step 6: Final answer
    x = 215,708.20

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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.