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Finding the Fourth Proportional to 331,211.10, 496,843.65 and 141,672.90

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Solution

The fourth proportional to 331,211.10, 496,843.65 and 141,672.90 is: 212,520.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,211.10 : 496,843.65 = 141,672.90 : x
  2. Step 2: Convert to fraction form
    331,211.10/496,843.65 = 141,672.90/x
  3. Step 3: Cross multiply
    331,211.10x = 496,843.65 × 141,672.90
  4. Step 4: Simplify right side
    331,211.10x = 70,389,280,742.09
  5. Step 5: Solve for x
    x = 70,389,280,742.09/331,211.10
  6. Step 6: Final answer
    x = 212,520.90

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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.