Home / 258,949.97-388,478.21-109,190.69

Finding the Fourth Proportional to 258,949.97, 388,478.21 and 109,190.69

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Solution

The fourth proportional to 258,949.97, 388,478.21 and 109,190.69 is: 163,808.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,949.97 : 388,478.21 = 109,190.69 : x
  2. Step 2: Convert to fraction form
    258,949.97/388,478.21 = 109,190.69/x
  3. Step 3: Cross multiply
    258,949.97x = 388,478.21 × 109,190.69
  4. Step 4: Simplify right side
    258,949.97x = 42,418,201,311.52
  5. Step 5: Solve for x
    x = 42,418,201,311.52/258,949.97
  6. Step 6: Final answer
    x = 163,808.48

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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.