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Finding the Fourth Proportional to 260,804.62, 391,202.72 and 83,310.46

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Solution

The fourth proportional to 260,804.62, 391,202.72 and 83,310.46 is: 124,964.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,804.62 : 391,202.72 = 83,310.46 : x
  2. Step 2: Convert to fraction form
    260,804.62/391,202.72 = 83,310.46/x
  3. Step 3: Cross multiply
    260,804.62x = 391,202.72 × 83,310.46
  4. Step 4: Simplify right side
    260,804.62x = 32,591,278,556.45
  5. Step 5: Solve for x
    x = 32,591,278,556.45/260,804.62
  6. Step 6: Final answer
    x = 124,964.35

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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.