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Finding the Fourth Proportional to 381,836.57, 526,815.90 and 220,632.80

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Solution

The fourth proportional to 381,836.57, 526,815.90 and 220,632.80 is: 304,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,836.57 : 526,815.90 = 220,632.80 : x
  2. Step 2: Convert to fraction form
    381,836.57/526,815.90 = 220,632.80/x
  3. Step 3: Cross multiply
    381,836.57x = 526,815.90 × 220,632.80
  4. Step 4: Simplify right side
    381,836.57x = 116,232,864,467.44
  5. Step 5: Solve for x
    x = 116,232,864,467.44/381,836.57
  6. Step 6: Final answer
    x = 304,404.75

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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.