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Finding the Fourth Proportional to 260,868.80, 391,251.90 and 83,327.96

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Solution

The fourth proportional to 260,868.80, 391,251.90 and 83,327.96 is: 124,975.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,868.80 : 391,251.90 = 83,327.96 : x
  2. Step 2: Convert to fraction form
    260,868.80/391,251.90 = 83,327.96/x
  3. Step 3: Cross multiply
    260,868.80x = 391,251.90 × 83,327.96
  4. Step 4: Simplify right side
    260,868.80x = 32,602,222,673.12
  5. Step 5: Solve for x
    x = 32,602,222,673.12/260,868.80
  6. Step 6: Final answer
    x = 124,975.55

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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.