Home / 220,422.60-329,977.80-131,630.40

Finding the Fourth Proportional to 220,422.60, 329,977.80 and 131,630.40

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Solution

The fourth proportional to 220,422.60, 329,977.80 and 131,630.40 is: 197,053.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,422.60 : 329,977.80 = 131,630.40 : x
  2. Step 2: Convert to fraction form
    220,422.60/329,977.80 = 131,630.40/x
  3. Step 3: Cross multiply
    220,422.60x = 329,977.80 × 131,630.40
  4. Step 4: Simplify right side
    220,422.60x = 43,435,109,805.12
  5. Step 5: Solve for x
    x = 43,435,109,805.12/220,422.60
  6. Step 6: Final answer
    x = 197,053.79

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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.