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Finding the Fourth Proportional to 396,758.80, 595,021.38 and 216,637.48

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Solution

The fourth proportional to 396,758.80, 595,021.38 and 216,637.48 is: 324,892.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,758.80 : 595,021.38 = 216,637.48 : x
  2. Step 2: Convert to fraction form
    396,758.80/595,021.38 = 216,637.48/x
  3. Step 3: Cross multiply
    396,758.80x = 595,021.38 × 216,637.48
  4. Step 4: Simplify right side
    396,758.80x = 128,903,932,309.32
  5. Step 5: Solve for x
    x = 128,903,932,309.32/396,758.80
  6. Step 6: Final answer
    x = 324,892.43

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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.