Home / 725,103.40-1,087,229.58-219,512.20

Finding the Fourth Proportional to 725,103.40, 1,087,229.58 and 219,512.20

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Solution

The fourth proportional to 725,103.40, 1,087,229.58 and 219,512.20 is: 329,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,103.40 : 1,087,229.58 = 219,512.20 : x
  2. Step 2: Convert to fraction form
    725,103.40/1,087,229.58 = 219,512.20/x
  3. Step 3: Cross multiply
    725,103.40x = 1,087,229.58 × 219,512.20
  4. Step 4: Simplify right side
    725,103.40x = 238,660,157,010.88
  5. Step 5: Solve for x
    x = 238,660,157,010.88/725,103.40
  6. Step 6: Final answer
    x = 329,139.48

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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.