Home / 260,961.47-391,427.75-71,408.23

Finding the Fourth Proportional to 260,961.47, 391,427.75 and 71,408.23

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Solution

The fourth proportional to 260,961.47, 391,427.75 and 71,408.23 is: 107,108.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,961.47 : 391,427.75 = 71,408.23 : x
  2. Step 2: Convert to fraction form
    260,961.47/391,427.75 = 71,408.23/x
  3. Step 3: Cross multiply
    260,961.47x = 391,427.75 × 71,408.23
  4. Step 4: Simplify right side
    260,961.47x = 27,951,162,000.33
  5. Step 5: Solve for x
    x = 27,951,162,000.33/260,961.47
  6. Step 6: Final answer
    x = 107,108.39

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1.5x scale

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.