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Finding the Fourth Proportional to 351,708.82, 485,294.26 and 196,662.90

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Solution

The fourth proportional to 351,708.82, 485,294.26 and 196,662.90 is: 271,359.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,708.82 : 485,294.26 = 196,662.90 : x
  2. Step 2: Convert to fraction form
    351,708.82/485,294.26 = 196,662.90/x
  3. Step 3: Cross multiply
    351,708.82x = 485,294.26 × 196,662.90
  4. Step 4: Simplify right side
    351,708.82x = 95,439,376,524.95
  5. Step 5: Solve for x
    x = 95,439,376,524.95/351,708.82
  6. Step 6: Final answer
    x = 271,359.06

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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.