Home / 261,629.20-392,443.80-149,309.20

Finding the Fourth Proportional to 261,629.20, 392,443.80 and 149,309.20

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Solution

The fourth proportional to 261,629.20, 392,443.80 and 149,309.20 is: 223,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,629.20 : 392,443.80 = 149,309.20 : x
  2. Step 2: Convert to fraction form
    261,629.20/392,443.80 = 149,309.20/x
  3. Step 3: Cross multiply
    261,629.20x = 392,443.80 × 149,309.20
  4. Step 4: Simplify right side
    261,629.20x = 58,595,469,822.96
  5. Step 5: Solve for x
    x = 58,595,469,822.96/261,629.20
  6. Step 6: Final answer
    x = 223,963.80

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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.