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Finding the Fourth Proportional to 227,200.80, 340,736.40 and 69,391.20

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Solution

The fourth proportional to 227,200.80, 340,736.40 and 69,391.20 is: 104,067.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    227,200.80 : 340,736.40 = 69,391.20 : x
  2. Step 2: Convert to fraction form
    227,200.80/340,736.40 = 69,391.20/x
  3. Step 3: Cross multiply
    227,200.80x = 340,736.40 × 69,391.20
  4. Step 4: Simplify right side
    227,200.80x = 23,644,107,679.68
  5. Step 5: Solve for x
    x = 23,644,107,679.68/227,200.80
  6. Step 6: Final answer
    x = 104,067.01

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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.