Home / 259,249.28-388,873.91-81,770.13

Finding the Fourth Proportional to 259,249.28, 388,873.91 and 81,770.13

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Solution

The fourth proportional to 259,249.28, 388,873.91 and 81,770.13 is: 122,655.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,249.28 : 388,873.91 = 81,770.13 : x
  2. Step 2: Convert to fraction form
    259,249.28/388,873.91 = 81,770.13/x
  3. Step 3: Cross multiply
    259,249.28x = 388,873.91 × 81,770.13
  4. Step 4: Simplify right side
    259,249.28x = 31,798,270,378.73
  5. Step 5: Solve for x
    x = 31,798,270,378.73/259,249.28
  6. Step 6: Final answer
    x = 122,655.20

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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.