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Finding the Fourth Proportional to 220,089.43, 330,205.01 and 100,189.28

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Solution

The fourth proportional to 220,089.43, 330,205.01 and 100,189.28 is: 150,316.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,089.43 : 330,205.01 = 100,189.28 : x
  2. Step 2: Convert to fraction form
    220,089.43/330,205.01 = 100,189.28/x
  3. Step 3: Cross multiply
    220,089.43x = 330,205.01 × 100,189.28
  4. Step 4: Simplify right side
    220,089.43x = 33,083,002,528.86
  5. Step 5: Solve for x
    x = 33,083,002,528.86/220,089.43
  6. Step 6: Final answer
    x = 150,316.18

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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.