Home / 272,320.20-408,480.30-82,780.20

Finding the Fourth Proportional to 272,320.20, 408,480.30 and 82,780.20

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Solution

The fourth proportional to 272,320.20, 408,480.30 and 82,780.20 is: 124,170.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,320.20 : 408,480.30 = 82,780.20 : x
  2. Step 2: Convert to fraction form
    272,320.20/408,480.30 = 82,780.20/x
  3. Step 3: Cross multiply
    272,320.20x = 408,480.30 × 82,780.20
  4. Step 4: Simplify right side
    272,320.20x = 33,814,080,930.06
  5. Step 5: Solve for x
    x = 33,814,080,930.06/272,320.20
  6. Step 6: Final answer
    x = 124,170.30

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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.