Home / 220,511.20-330,476.16-87,318.80

Finding the Fourth Proportional to 220,511.20, 330,476.16 and 87,318.80

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Solution

The fourth proportional to 220,511.20, 330,476.16 and 87,318.80 is: 130,863.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,511.20 : 330,476.16 = 87,318.80 : x
  2. Step 2: Convert to fraction form
    220,511.20/330,476.16 = 87,318.80/x
  3. Step 3: Cross multiply
    220,511.20x = 330,476.16 × 87,318.80
  4. Step 4: Simplify right side
    220,511.20x = 28,856,780,067.43
  5. Step 5: Solve for x
    x = 28,856,780,067.43/220,511.20
  6. Step 6: Final answer
    x = 130,863.10

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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.