Home / 260,915.22-391,375.53-83,418.30

Finding the Fourth Proportional to 260,915.22, 391,375.53 and 83,418.30

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Solution

The fourth proportional to 260,915.22, 391,375.53 and 83,418.30 is: 125,128.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,915.22 : 391,375.53 = 83,418.30 : x
  2. Step 2: Convert to fraction form
    260,915.22/391,375.53 = 83,418.30/x
  3. Step 3: Cross multiply
    260,915.22x = 391,375.53 × 83,418.30
  4. Step 4: Simplify right side
    260,915.22x = 32,647,881,374.20
  5. Step 5: Solve for x
    x = 32,647,881,374.20/260,915.22
  6. Step 6: Final answer
    x = 125,128.31

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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.