Home / 238,720.28-329,427.38-131,290.28

Finding the Fourth Proportional to 238,720.28, 329,427.38 and 131,290.28

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Solution

The fourth proportional to 238,720.28, 329,427.38 and 131,290.28 is: 181,176.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,720.28 : 329,427.38 = 131,290.28 : x
  2. Step 2: Convert to fraction form
    238,720.28/329,427.38 = 131,290.28/x
  3. Step 3: Cross multiply
    238,720.28x = 329,427.38 × 131,290.28
  4. Step 4: Simplify right side
    238,720.28x = 43,250,612,959.87
  5. Step 5: Solve for x
    x = 43,250,612,959.87/238,720.28
  6. Step 6: Final answer
    x = 181,176.95

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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.