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Finding the Fourth Proportional to 351,575.22, 485,139.13 and 196,497.89

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Solution

The fourth proportional to 351,575.22, 485,139.13 and 196,497.89 is: 271,147.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,575.22 : 485,139.13 = 196,497.89 : x
  2. Step 2: Convert to fraction form
    351,575.22/485,139.13 = 196,497.89/x
  3. Step 3: Cross multiply
    351,575.22x = 485,139.13 × 196,497.89
  4. Step 4: Simplify right side
    351,575.22x = 95,328,815,401.44
  5. Step 5: Solve for x
    x = 95,328,815,401.44/351,575.22
  6. Step 6: Final answer
    x = 271,147.71

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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.