Home / 260,744.47-391,177.37-80,820.35

Finding the Fourth Proportional to 260,744.47, 391,177.37 and 80,820.35

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Solution

The fourth proportional to 260,744.47, 391,177.37 and 80,820.35 is: 121,249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,744.47 : 391,177.37 = 80,820.35 : x
  2. Step 2: Convert to fraction form
    260,744.47/391,177.37 = 80,820.35/x
  3. Step 3: Cross multiply
    260,744.47x = 391,177.37 × 80,820.35
  4. Step 4: Simplify right side
    260,744.47x = 31,615,093,414.32
  5. Step 5: Solve for x
    x = 31,615,093,414.32/260,744.47
  6. Step 6: Final answer
    x = 121,249.33

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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.