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Finding the Fourth Proportional to 318,169.89, 477,473.94 and 131,181.39

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Solution

The fourth proportional to 318,169.89, 477,473.94 and 131,181.39 is: 196,862.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,169.89 : 477,473.94 = 131,181.39 : x
  2. Step 2: Convert to fraction form
    318,169.89/477,473.94 = 131,181.39/x
  3. Step 3: Cross multiply
    318,169.89x = 477,473.94 × 131,181.39
  4. Step 4: Simplify right side
    318,169.89x = 62,635,695,137.98
  5. Step 5: Solve for x
    x = 62,635,695,137.98/318,169.89
  6. Step 6: Final answer
    x = 196,862.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.