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Finding the Fourth Proportional to 381,660.37, 526,670.76 and 211,883.56

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Solution

The fourth proportional to 381,660.37, 526,670.76 and 211,883.56 is: 292,387.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,660.37 : 526,670.76 = 211,883.56 : x
  2. Step 2: Convert to fraction form
    381,660.37/526,670.76 = 211,883.56/x
  3. Step 3: Cross multiply
    381,660.37x = 526,670.76 × 211,883.56
  4. Step 4: Simplify right side
    381,660.37x = 111,592,876,098.82
  5. Step 5: Solve for x
    x = 111,592,876,098.82/381,660.37
  6. Step 6: Final answer
    x = 292,387.90

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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.