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Finding the Fourth Proportional to 260,893.50, 391,334.67 and 71,353.86

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Solution

The fourth proportional to 260,893.50, 391,334.67 and 71,353.86 is: 107,029.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,893.50 : 391,334.67 = 71,353.86 : x
  2. Step 2: Convert to fraction form
    260,893.50/391,334.67 = 71,353.86/x
  3. Step 3: Cross multiply
    260,893.50x = 391,334.67 × 71,353.86
  4. Step 4: Simplify right side
    260,893.50x = 27,923,239,256.33
  5. Step 5: Solve for x
    x = 27,923,239,256.33/260,893.50
  6. Step 6: Final answer
    x = 107,029.26

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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.