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Finding the Fourth Proportional to 260,445.80, 389,631.90 and 225,770.60

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Solution

The fourth proportional to 260,445.80, 389,631.90 and 225,770.60 is: 337,757.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,445.80 : 389,631.90 = 225,770.60 : x
  2. Step 2: Convert to fraction form
    260,445.80/389,631.90 = 225,770.60/x
  3. Step 3: Cross multiply
    260,445.80x = 389,631.90 × 225,770.60
  4. Step 4: Simplify right side
    260,445.80x = 87,967,427,842.14
  5. Step 5: Solve for x
    x = 87,967,427,842.14/260,445.80
  6. Step 6: Final answer
    x = 337,757.14

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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.