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Finding the Fourth Proportional to 259,150.98, 388,587.96 and 81,610.32

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Solution

The fourth proportional to 259,150.98, 388,587.96 and 81,610.32 is: 122,371.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,150.98 : 388,587.96 = 81,610.32 : x
  2. Step 2: Convert to fraction form
    259,150.98/388,587.96 = 81,610.32/x
  3. Step 3: Cross multiply
    259,150.98x = 388,587.96 × 81,610.32
  4. Step 4: Simplify right side
    259,150.98x = 31,712,787,763.75
  5. Step 5: Solve for x
    x = 31,712,787,763.75/259,150.98
  6. Step 6: Final answer
    x = 122,371.86

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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.