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Finding the Fourth Proportional to 231,310.08, 346,728.78 and 131,259

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Solution

The fourth proportional to 231,310.08, 346,728.78 and 131,259 is: 196,754.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,310.08 : 346,728.78 = 131,259 : x
  2. Step 2: Convert to fraction form
    231,310.08/346,728.78 = 131,259/x
  3. Step 3: Cross multiply
    231,310.08x = 346,728.78 × 131,259
  4. Step 4: Simplify right side
    231,310.08x = 45,511,272,934.02
  5. Step 5: Solve for x
    x = 45,511,272,934.02/231,310.08
  6. Step 6: Final answer
    x = 196,754.39

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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.