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Finding the Fourth Proportional to 331,279.44, 457,171.16 and 188,043.88

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Solution

The fourth proportional to 331,279.44, 457,171.16 and 188,043.88 is: 259,503.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,279.44 : 457,171.16 = 188,043.88 : x
  2. Step 2: Convert to fraction form
    331,279.44/457,171.16 = 188,043.88/x
  3. Step 3: Cross multiply
    331,279.44x = 457,171.16 × 188,043.88
  4. Step 4: Simplify right side
    331,279.44x = 85,968,238,750.50
  5. Step 5: Solve for x
    x = 85,968,238,750.50/331,279.44
  6. Step 6: Final answer
    x = 259,503.69

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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.