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Finding the Fourth Proportional to 220,469.80, 329,829.90 and 191,212.60

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Solution

The fourth proportional to 220,469.80, 329,829.90 and 191,212.60 is: 286,060.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,469.80 : 329,829.90 = 191,212.60 : x
  2. Step 2: Convert to fraction form
    220,469.80/329,829.90 = 191,212.60/x
  3. Step 3: Cross multiply
    220,469.80x = 329,829.90 × 191,212.60
  4. Step 4: Simplify right side
    220,469.80x = 63,067,632,736.74
  5. Step 5: Solve for x
    x = 63,067,632,736.74/220,469.80
  6. Step 6: Final answer
    x = 286,060.19

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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.