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Finding the Fourth Proportional to 395,517.35, 545,813.73 and 214,229.23

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Solution

The fourth proportional to 395,517.35, 545,813.73 and 214,229.23 is: 295,636.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,517.35 : 545,813.73 = 214,229.23 : x
  2. Step 2: Convert to fraction form
    395,517.35/545,813.73 = 214,229.23/x
  3. Step 3: Cross multiply
    395,517.35x = 545,813.73 × 214,229.23
  4. Step 4: Simplify right side
    395,517.35x = 116,929,253,736.79
  5. Step 5: Solve for x
    x = 116,929,253,736.79/395,517.35
  6. Step 6: Final answer
    x = 295,636.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.