Home / 260,787.67-391,237.46-80,869.25

Finding the Fourth Proportional to 260,787.67, 391,237.46 and 80,869.25

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Solution

The fourth proportional to 260,787.67, 391,237.46 and 80,869.25 is: 121,321.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,787.67 : 391,237.46 = 80,869.25 : x
  2. Step 2: Convert to fraction form
    260,787.67/391,237.46 = 80,869.25/x
  3. Step 3: Cross multiply
    260,787.67x = 391,237.46 × 80,869.25
  4. Step 4: Simplify right side
    260,787.67x = 31,639,080,839.11
  5. Step 5: Solve for x
    x = 31,639,080,839.11/260,787.67
  6. Step 6: Final answer
    x = 121,321.23

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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.