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Finding the Fourth Proportional to 220,524.86, 330,480.84 and 115,133.60

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Solution

The fourth proportional to 220,524.86, 330,480.84 and 115,133.60 is: 172,540.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,524.86 : 330,480.84 = 115,133.60 : x
  2. Step 2: Convert to fraction form
    220,524.86/330,480.84 = 115,133.60/x
  3. Step 3: Cross multiply
    220,524.86x = 330,480.84 × 115,133.60
  4. Step 4: Simplify right side
    220,524.86x = 38,049,448,840.22
  5. Step 5: Solve for x
    x = 38,049,448,840.22/220,524.86
  6. Step 6: Final answer
    x = 172,540.41

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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.