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Finding the Fourth Proportional to 381,895.01, 526,956.50 and 220,718.78

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Solution

The fourth proportional to 381,895.01, 526,956.50 and 220,718.78 is: 304,558.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,895.01 : 526,956.50 = 220,718.78 : x
  2. Step 2: Convert to fraction form
    381,895.01/526,956.50 = 220,718.78/x
  3. Step 3: Cross multiply
    381,895.01x = 526,956.50 × 220,718.78
  4. Step 4: Simplify right side
    381,895.01x = 116,309,195,793.07
  5. Step 5: Solve for x
    x = 116,309,195,793.07/381,895.01
  6. Step 6: Final answer
    x = 304,558.04

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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.