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Finding the Fourth Proportional to 381,121.06, 525,909.13 and 220,028.10

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Solution

The fourth proportional to 381,121.06, 525,909.13 and 220,028.10 is: 303,616.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,121.06 : 525,909.13 = 220,028.10 : x
  2. Step 2: Convert to fraction form
    381,121.06/525,909.13 = 220,028.10/x
  3. Step 3: Cross multiply
    381,121.06x = 525,909.13 × 220,028.10
  4. Step 4: Simplify right side
    381,121.06x = 115,714,786,646.55
  5. Step 5: Solve for x
    x = 115,714,786,646.55/381,121.06
  6. Step 6: Final answer
    x = 303,616.88

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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.