Home / 299,911.20-449,422.92-131,275.68

Finding the Fourth Proportional to 299,911.20, 449,422.92 and 131,275.68

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Solution

The fourth proportional to 299,911.20, 449,422.92 and 131,275.68 is: 196,719.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,911.20 : 449,422.92 = 131,275.68 : x
  2. Step 2: Convert to fraction form
    299,911.20/449,422.92 = 131,275.68/x
  3. Step 3: Cross multiply
    299,911.20x = 449,422.92 × 131,275.68
  4. Step 4: Simplify right side
    299,911.20x = 58,998,299,430.59
  5. Step 5: Solve for x
    x = 58,998,299,430.59/299,911.20
  6. Step 6: Final answer
    x = 196,719.23

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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.