Home / 220,083.31-303,716.24-129,443.09

Finding the Fourth Proportional to 220,083.31, 303,716.24 and 129,443.09

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Solution

The fourth proportional to 220,083.31, 303,716.24 and 129,443.09 is: 178,632.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,083.31 : 303,716.24 = 129,443.09 : x
  2. Step 2: Convert to fraction form
    220,083.31/303,716.24 = 129,443.09/x
  3. Step 3: Cross multiply
    220,083.31x = 303,716.24 × 129,443.09
  4. Step 4: Simplify right side
    220,083.31x = 39,313,968,588.78
  5. Step 5: Solve for x
    x = 39,313,968,588.78/220,083.31
  6. Step 6: Final answer
    x = 178,632.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.