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Finding the Fourth Proportional to 250,633.31, 345,874.73 and 135,911.86

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Solution

The fourth proportional to 250,633.31, 345,874.73 and 135,911.86 is: 187,558.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,633.31 : 345,874.73 = 135,911.86 : x
  2. Step 2: Convert to fraction form
    250,633.31/345,874.73 = 135,911.86/x
  3. Step 3: Cross multiply
    250,633.31x = 345,874.73 × 135,911.86
  4. Step 4: Simplify right side
    250,633.31x = 47,008,476,337.05
  5. Step 5: Solve for x
    x = 47,008,476,337.05/250,633.31
  6. Step 6: Final answer
    x = 187,558.78

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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.