Home / 259,005.25-388,529.88-72,016.75

Finding the Fourth Proportional to 259,005.25, 388,529.88 and 72,016.75

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Solution

The fourth proportional to 259,005.25, 388,529.88 and 72,016.75 is: 108,031.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,005.25 : 388,529.88 = 72,016.75 : x
  2. Step 2: Convert to fraction form
    259,005.25/388,529.88 = 72,016.75/x
  3. Step 3: Cross multiply
    259,005.25x = 388,529.88 × 72,016.75
  4. Step 4: Simplify right side
    259,005.25x = 27,980,659,235.49
  5. Step 5: Solve for x
    x = 27,980,659,235.49/259,005.25
  6. Step 6: Final answer
    x = 108,031.24

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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.