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Finding the Fourth Proportional to 381,200.88, 526,120.20 and 211,489.68

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Solution

The fourth proportional to 381,200.88, 526,120.20 and 211,489.68 is: 291,890.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,200.88 : 526,120.20 = 211,489.68 : x
  2. Step 2: Convert to fraction form
    381,200.88/526,120.20 = 211,489.68/x
  3. Step 3: Cross multiply
    381,200.88x = 526,120.20 × 211,489.68
  4. Step 4: Simplify right side
    381,200.88x = 111,268,992,739.54
  5. Step 5: Solve for x
    x = 111,268,992,739.54/381,200.88
  6. Step 6: Final answer
    x = 291,890.70

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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.