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Finding the Fourth Proportional to 279,091.62, 385,255.99 and 197,844.54

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Solution

The fourth proportional to 279,091.62, 385,255.99 and 197,844.54 is: 273,103.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,091.62 : 385,255.99 = 197,844.54 : x
  2. Step 2: Convert to fraction form
    279,091.62/385,255.99 = 197,844.54/x
  3. Step 3: Cross multiply
    279,091.62x = 385,255.99 × 197,844.54
  4. Step 4: Simplify right side
    279,091.62x = 76,220,794,123.79
  5. Step 5: Solve for x
    x = 76,220,794,123.79/279,091.62
  6. Step 6: Final answer
    x = 273,103.13

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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.