Home / 381,069.28-571,422.92-221,194.55

Finding the Fourth Proportional to 381,069.28, 571,422.92 and 221,194.55

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Solution

The fourth proportional to 381,069.28, 571,422.92 and 221,194.55 is: 331,686.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,069.28 : 571,422.92 = 221,194.55 : x
  2. Step 2: Convert to fraction form
    381,069.28/571,422.92 = 221,194.55/x
  3. Step 3: Cross multiply
    381,069.28x = 571,422.92 × 221,194.55
  4. Step 4: Simplify right side
    381,069.28x = 126,395,634,001.64
  5. Step 5: Solve for x
    x = 126,395,634,001.64/381,069.28
  6. Step 6: Final answer
    x = 331,686.76

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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.