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Finding the Fourth Proportional to 381,814.56, 526,873.35 and 220,680.05

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Solution

The fourth proportional to 381,814.56, 526,873.35 and 220,680.05 is: 304,520.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,814.56 : 526,873.35 = 220,680.05 : x
  2. Step 2: Convert to fraction form
    381,814.56/526,873.35 = 220,680.05/x
  3. Step 3: Cross multiply
    381,814.56x = 526,873.35 × 220,680.05
  4. Step 4: Simplify right side
    381,814.56x = 116,270,434,587.30
  5. Step 5: Solve for x
    x = 116,270,434,587.30/381,814.56
  6. Step 6: Final answer
    x = 304,520.69

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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.