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Finding the Fourth Proportional to 220,118.50, 330,178.56 and 53,906.50

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Solution

The fourth proportional to 220,118.50, 330,178.56 and 53,906.50 is: 80,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,118.50 : 330,178.56 = 53,906.50 : x
  2. Step 2: Convert to fraction form
    220,118.50/330,178.56 = 53,906.50/x
  3. Step 3: Cross multiply
    220,118.50x = 330,178.56 × 53,906.50
  4. Step 4: Simplify right side
    220,118.50x = 17,798,770,544.64
  5. Step 5: Solve for x
    x = 17,798,770,544.64/220,118.50
  6. Step 6: Final answer
    x = 80,859.95

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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.