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Finding the Fourth Proportional to 396,757.80, 595,019.88 and 216,636.48

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Solution

The fourth proportional to 396,757.80, 595,019.88 and 216,636.48 is: 324,890.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,757.80 : 595,019.88 = 216,636.48 : x
  2. Step 2: Convert to fraction form
    396,757.80/595,019.88 = 216,636.48/x
  3. Step 3: Cross multiply
    396,757.80x = 595,019.88 × 216,636.48
  4. Step 4: Simplify right side
    396,757.80x = 128,903,012,333.22
  5. Step 5: Solve for x
    x = 128,903,012,333.22/396,757.80
  6. Step 6: Final answer
    x = 324,890.93

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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.