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Finding the Fourth Proportional to 100,443.22, 150,660.50 and 30,320.44

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Solution

The fourth proportional to 100,443.22, 150,660.50 and 30,320.44 is: 45,479.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,443.22 : 150,660.50 = 30,320.44 : x
  2. Step 2: Convert to fraction form
    100,443.22/150,660.50 = 30,320.44/x
  3. Step 3: Cross multiply
    100,443.22x = 150,660.50 × 30,320.44
  4. Step 4: Simplify right side
    100,443.22x = 4,568,092,122.37
  5. Step 5: Solve for x
    x = 4,568,092,122.37/100,443.22
  6. Step 6: Final answer
    x = 45,479.35

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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.