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Finding the Fourth Proportional to 381,589.31, 571,845.84 and 210,887.89

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Solution

The fourth proportional to 381,589.31, 571,845.84 and 210,887.89 is: 316,034.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,589.31 : 571,845.84 = 210,887.89 : x
  2. Step 2: Convert to fraction form
    381,589.31/571,845.84 = 210,887.89/x
  3. Step 3: Cross multiply
    381,589.31x = 571,845.84 × 210,887.89
  4. Step 4: Simplify right side
    381,589.31x = 120,595,361,548.44
  5. Step 5: Solve for x
    x = 120,595,361,548.44/381,589.31
  6. Step 6: Final answer
    x = 316,034.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.