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Finding the Fourth Proportional to 486,805.44, 671,743.20 and 271,940.88

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Solution

The fourth proportional to 486,805.44, 671,743.20 and 271,940.88 is: 375,251.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,805.44 : 671,743.20 = 271,940.88 : x
  2. Step 2: Convert to fraction form
    486,805.44/671,743.20 = 271,940.88/x
  3. Step 3: Cross multiply
    486,805.44x = 671,743.20 × 271,940.88
  4. Step 4: Simplify right side
    486,805.44x = 182,674,436,942.02
  5. Step 5: Solve for x
    x = 182,674,436,942.02/486,805.44
  6. Step 6: Final answer
    x = 375,251.43

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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.