Home / 259,028.49-388,216.38-138,787.23

Finding the Fourth Proportional to 259,028.49, 388,216.38 and 138,787.23

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Solution

The fourth proportional to 259,028.49, 388,216.38 and 138,787.23 is: 208,005.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,028.49 : 388,216.38 = 138,787.23 : x
  2. Step 2: Convert to fraction form
    259,028.49/388,216.38 = 138,787.23/x
  3. Step 3: Cross multiply
    259,028.49x = 388,216.38 × 138,787.23
  4. Step 4: Simplify right side
    259,028.49x = 53,879,476,020.83
  5. Step 5: Solve for x
    x = 53,879,476,020.83/259,028.49
  6. Step 6: Final answer
    x = 208,005.98

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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.