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Finding the Fourth Proportional to 395,481.22, 545,812.04 and 223,406.44

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Solution

The fourth proportional to 395,481.22, 545,812.04 and 223,406.44 is: 308,327.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,481.22 : 545,812.04 = 223,406.44 : x
  2. Step 2: Convert to fraction form
    395,481.22/545,812.04 = 223,406.44/x
  3. Step 3: Cross multiply
    395,481.22x = 545,812.04 × 223,406.44
  4. Step 4: Simplify right side
    395,481.22x = 121,937,924,765.54
  5. Step 5: Solve for x
    x = 121,937,924,765.54/395,481.22
  6. Step 6: Final answer
    x = 308,327.98

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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.