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Finding the Fourth Proportional to 260,744.84, 391,178.27 and 80,820.86

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Solution

The fourth proportional to 260,744.84, 391,178.27 and 80,820.86 is: 121,250.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,744.84 : 391,178.27 = 80,820.86 : x
  2. Step 2: Convert to fraction form
    260,744.84/391,178.27 = 80,820.86/x
  3. Step 3: Cross multiply
    260,744.84x = 391,178.27 × 80,820.86
  4. Step 4: Simplify right side
    260,744.84x = 31,615,361,834.72
  5. Step 5: Solve for x
    x = 31,615,361,834.72/260,744.84
  6. Step 6: Final answer
    x = 121,250.19

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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.