Home / 426,121.92-639,468-176,803.92

Finding the Fourth Proportional to 426,121.92, 639,468 and 176,803.92

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Solution

The fourth proportional to 426,121.92, 639,468 and 176,803.92 is: 265,324.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,121.92 : 639,468 = 176,803.92 : x
  2. Step 2: Convert to fraction form
    426,121.92/639,468 = 176,803.92/x
  3. Step 3: Cross multiply
    426,121.92x = 639,468 × 176,803.92
  4. Step 4: Simplify right side
    426,121.92x = 113,060,449,114.56
  5. Step 5: Solve for x
    x = 113,060,449,114.56/426,121.92
  6. Step 6: Final answer
    x = 265,324.18

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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.