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Finding the Fourth Proportional to 443,654.82, 612,469.35 and 273,987.36

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Solution

The fourth proportional to 443,654.82, 612,469.35 and 273,987.36 is: 378,241.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,654.82 : 612,469.35 = 273,987.36 : x
  2. Step 2: Convert to fraction form
    443,654.82/612,469.35 = 273,987.36/x
  3. Step 3: Cross multiply
    443,654.82x = 612,469.35 × 273,987.36
  4. Step 4: Simplify right side
    443,654.82x = 167,808,860,287.42
  5. Step 5: Solve for x
    x = 167,808,860,287.42/443,654.82
  6. Step 6: Final answer
    x = 378,241.94

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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.