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Finding the Fourth Proportional to 259,164.70, 388,753.20 and 69,625.30

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Solution

The fourth proportional to 259,164.70, 388,753.20 and 69,625.30 is: 104,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,164.70 : 388,753.20 = 69,625.30 : x
  2. Step 2: Convert to fraction form
    259,164.70/388,753.20 = 69,625.30/x
  3. Step 3: Cross multiply
    259,164.70x = 388,753.20 × 69,625.30
  4. Step 4: Simplify right side
    259,164.70x = 27,067,058,175.96
  5. Step 5: Solve for x
    x = 27,067,058,175.96/259,164.70
  6. Step 6: Final answer
    x = 104,439.60

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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.