Home / 426,122.20-639,183.30-159,891.40

Finding the Fourth Proportional to 426,122.20, 639,183.30 and 159,891.40

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Solution

The fourth proportional to 426,122.20, 639,183.30 and 159,891.40 is: 239,837.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,122.20 : 639,183.30 = 159,891.40 : x
  2. Step 2: Convert to fraction form
    426,122.20/639,183.30 = 159,891.40/x
  3. Step 3: Cross multiply
    426,122.20x = 639,183.30 × 159,891.40
  4. Step 4: Simplify right side
    426,122.20x = 102,199,912,693.62
  5. Step 5: Solve for x
    x = 102,199,912,693.62/426,122.20
  6. Step 6: Final answer
    x = 239,837.10

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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.