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Finding the Fourth Proportional to 663,125.78, 994,882.73 and 213,837.54

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Solution

The fourth proportional to 663,125.78, 994,882.73 and 213,837.54 is: 320,818.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,125.78 : 994,882.73 = 213,837.54 : x
  2. Step 2: Convert to fraction form
    663,125.78/994,882.73 = 213,837.54/x
  3. Step 3: Cross multiply
    663,125.78x = 994,882.73 × 213,837.54
  4. Step 4: Simplify right side
    663,125.78x = 212,743,275,571.68
  5. Step 5: Solve for x
    x = 212,743,275,571.68/663,125.78
  6. Step 6: Final answer
    x = 320,818.89

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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.