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Finding the Fourth Proportional to 379,687.62, 523,976.50 and 207,616.36

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Solution

The fourth proportional to 379,687.62, 523,976.50 and 207,616.36 is: 286,514.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,687.62 : 523,976.50 = 207,616.36 : x
  2. Step 2: Convert to fraction form
    379,687.62/523,976.50 = 207,616.36/x
  3. Step 3: Cross multiply
    379,687.62x = 523,976.50 × 207,616.36
  4. Step 4: Simplify right side
    379,687.62x = 108,786,093,655.54
  5. Step 5: Solve for x
    x = 108,786,093,655.54/379,687.62
  6. Step 6: Final answer
    x = 286,514.72

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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.