Home / 381,311.28-526,286.16-220,192.56

Finding the Fourth Proportional to 381,311.28, 526,286.16 and 220,192.56

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Solution

The fourth proportional to 381,311.28, 526,286.16 and 220,192.56 is: 303,909.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,311.28 : 526,286.16 = 220,192.56 : x
  2. Step 2: Convert to fraction form
    381,311.28/526,286.16 = 220,192.56/x
  3. Step 3: Cross multiply
    381,311.28x = 526,286.16 × 220,192.56
  4. Step 4: Simplify right side
    381,311.28x = 115,884,296,862.97
  5. Step 5: Solve for x
    x = 115,884,296,862.97/381,311.28
  6. Step 6: Final answer
    x = 303,909.96

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1.5x scale

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.