Home / 257,982.24-387,122.76-108,209.20

Finding the Fourth Proportional to 257,982.24, 387,122.76 and 108,209.20

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Solution

The fourth proportional to 257,982.24, 387,122.76 and 108,209.20 is: 162,376.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,982.24 : 387,122.76 = 108,209.20 : x
  2. Step 2: Convert to fraction form
    257,982.24/387,122.76 = 108,209.20/x
  3. Step 3: Cross multiply
    257,982.24x = 387,122.76 × 108,209.20
  4. Step 4: Simplify right side
    257,982.24x = 41,890,244,161.39
  5. Step 5: Solve for x
    x = 41,890,244,161.39/257,982.24
  6. Step 6: Final answer
    x = 162,376.46

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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.