Home / 262,540.20-393,551.10-129,311.40

Finding the Fourth Proportional to 262,540.20, 393,551.10 and 129,311.40

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Solution

The fourth proportional to 262,540.20, 393,551.10 and 129,311.40 is: 193,839.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,540.20 : 393,551.10 = 129,311.40 : x
  2. Step 2: Convert to fraction form
    262,540.20/393,551.10 = 129,311.40/x
  3. Step 3: Cross multiply
    262,540.20x = 393,551.10 × 129,311.40
  4. Step 4: Simplify right side
    262,540.20x = 50,890,643,712.54
  5. Step 5: Solve for x
    x = 50,890,643,712.54/262,540.20
  6. Step 6: Final answer
    x = 193,839.43

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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.