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Finding the Fourth Proportional to 220,515.36, 330,392.60 and 120,747.36

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Solution

The fourth proportional to 220,515.36, 330,392.60 and 120,747.36 is: 180,912.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,515.36 : 330,392.60 = 120,747.36 : x
  2. Step 2: Convert to fraction form
    220,515.36/330,392.60 = 120,747.36/x
  3. Step 3: Cross multiply
    220,515.36x = 330,392.60 × 120,747.36
  4. Step 4: Simplify right side
    220,515.36x = 39,894,034,213.54
  5. Step 5: Solve for x
    x = 39,894,034,213.54/220,515.36
  6. Step 6: Final answer
    x = 180,912.72

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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.