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Finding the Fourth Proportional to 259,377.41, 389,033.30 and 81,902.36

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Solution

The fourth proportional to 259,377.41, 389,033.30 and 81,902.36 is: 122,843.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,377.41 : 389,033.30 = 81,902.36 : x
  2. Step 2: Convert to fraction form
    259,377.41/389,033.30 = 81,902.36/x
  3. Step 3: Cross multiply
    259,377.41x = 389,033.30 × 81,902.36
  4. Step 4: Simplify right side
    259,377.41x = 31,862,746,565.93
  5. Step 5: Solve for x
    x = 31,862,746,565.93/259,377.41
  6. Step 6: Final answer
    x = 122,843.18

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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.