Home / 259,292.14-388,995.33-79,378.92

Finding the Fourth Proportional to 259,292.14, 388,995.33 and 79,378.92

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Solution

The fourth proportional to 259,292.14, 388,995.33 and 79,378.92 is: 119,085.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,292.14 : 388,995.33 = 79,378.92 : x
  2. Step 2: Convert to fraction form
    259,292.14/388,995.33 = 79,378.92/x
  3. Step 3: Cross multiply
    259,292.14x = 388,995.33 × 79,378.92
  4. Step 4: Simplify right side
    259,292.14x = 30,878,029,768.43
  5. Step 5: Solve for x
    x = 30,878,029,768.43/259,292.14
  6. Step 6: Final answer
    x = 119,085.87

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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.