Home / 386,121.50-532,825.88-225,002.78

Finding the Fourth Proportional to 386,121.50, 532,825.88 and 225,002.78

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Solution

The fourth proportional to 386,121.50, 532,825.88 and 225,002.78 is: 310,491.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,121.50 : 532,825.88 = 225,002.78 : x
  2. Step 2: Convert to fraction form
    386,121.50/532,825.88 = 225,002.78/x
  3. Step 3: Cross multiply
    386,121.50x = 532,825.88 × 225,002.78
  4. Step 4: Simplify right side
    386,121.50x = 119,887,304,255.95
  5. Step 5: Solve for x
    x = 119,887,304,255.95/386,121.50
  6. Step 6: Final answer
    x = 310,491.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.