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Finding the Fourth Proportional to 260,761.70, 391,142.52 and 167,857.94

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Solution

The fourth proportional to 260,761.70, 391,142.52 and 167,857.94 is: 251,786.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,761.70 : 391,142.52 = 167,857.94 : x
  2. Step 2: Convert to fraction form
    260,761.70/391,142.52 = 167,857.94/x
  3. Step 3: Cross multiply
    260,761.70x = 391,142.52 × 167,857.94
  4. Step 4: Simplify right side
    260,761.70x = 65,656,377,653.61
  5. Step 5: Solve for x
    x = 65,656,377,653.61/260,761.70
  6. Step 6: Final answer
    x = 251,786.89

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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.