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Finding the Fourth Proportional to 381,192, 526,047.42 and 211,426.56

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Solution

The fourth proportional to 381,192, 526,047.42 and 211,426.56 is: 291,770.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,192 : 526,047.42 = 211,426.56 : x
  2. Step 2: Convert to fraction form
    381,192/526,047.42 = 211,426.56/x
  3. Step 3: Cross multiply
    381,192x = 526,047.42 × 211,426.56
  4. Step 4: Simplify right side
    381,192x = 111,220,396,407.48
  5. Step 5: Solve for x
    x = 111,220,396,407.48/381,192
  6. Step 6: Final answer
    x = 291,770.02

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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.