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Finding the Fourth Proportional to 381,672.68, 526,687.71 and 211,895.87

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Solution

The fourth proportional to 381,672.68, 526,687.71 and 211,895.87 is: 292,404.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,672.68 : 526,687.71 = 211,895.87 : x
  2. Step 2: Convert to fraction form
    381,672.68/526,687.71 = 211,895.87/x
  3. Step 3: Cross multiply
    381,672.68x = 526,687.71 × 211,895.87
  4. Step 4: Simplify right side
    381,672.68x = 111,602,950,528.76
  5. Step 5: Solve for x
    x = 111,602,950,528.76/381,672.68
  6. Step 6: Final answer
    x = 292,404.87

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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.