Home / 259,109.22-388,677.78-81,630.12

Finding the Fourth Proportional to 259,109.22, 388,677.78 and 81,630.12

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Solution

The fourth proportional to 259,109.22, 388,677.78 and 81,630.12 is: 122,449.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,109.22 : 388,677.78 = 81,630.12 : x
  2. Step 2: Convert to fraction form
    259,109.22/388,677.78 = 81,630.12/x
  3. Step 3: Cross multiply
    259,109.22x = 388,677.78 × 81,630.12
  4. Step 4: Simplify right side
    259,109.22x = 31,727,813,822.73
  5. Step 5: Solve for x
    x = 31,727,813,822.73/259,109.22
  6. Step 6: Final answer
    x = 122,449.57

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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.