Home / 259,006.25-388,531.38-72,017.75

Finding the Fourth Proportional to 259,006.25, 388,531.38 and 72,017.75

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Solution

The fourth proportional to 259,006.25, 388,531.38 and 72,017.75 is: 108,032.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,006.25 : 388,531.38 = 72,017.75 : x
  2. Step 2: Convert to fraction form
    259,006.25/388,531.38 = 72,017.75/x
  3. Step 3: Cross multiply
    259,006.25x = 388,531.38 × 72,017.75
  4. Step 4: Simplify right side
    259,006.25x = 27,981,155,792.00
  5. Step 5: Solve for x
    x = 27,981,155,792.00/259,006.25
  6. Step 6: Final answer
    x = 108,032.74

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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.