Home / 259,118.33-388,691.33-81,639.23

Finding the Fourth Proportional to 259,118.33, 388,691.33 and 81,639.23

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Solution

The fourth proportional to 259,118.33, 388,691.33 and 81,639.23 is: 122,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,118.33 : 388,691.33 = 81,639.23 : x
  2. Step 2: Convert to fraction form
    259,118.33/388,691.33 = 81,639.23/x
  3. Step 3: Cross multiply
    259,118.33x = 388,691.33 × 81,639.23
  4. Step 4: Simplify right side
    259,118.33x = 31,732,458,537.22
  5. Step 5: Solve for x
    x = 31,732,458,537.22/259,118.33
  6. Step 6: Final answer
    x = 122,463.20

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1.5x scale

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.