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Finding the Fourth Proportional to 379,043.67, 523,081.26 and 206,961.87

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Solution

The fourth proportional to 379,043.67, 523,081.26 and 206,961.87 is: 285,607.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,043.67 : 523,081.26 = 206,961.87 : x
  2. Step 2: Convert to fraction form
    379,043.67/523,081.26 = 206,961.87/x
  3. Step 3: Cross multiply
    379,043.67x = 523,081.26 × 206,961.87
  4. Step 4: Simplify right side
    379,043.67x = 108,257,875,731.56
  5. Step 5: Solve for x
    x = 108,257,875,731.56/379,043.67
  6. Step 6: Final answer
    x = 285,607.92

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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.