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Finding the Fourth Proportional to 396,388, 547,015.44 and 237,412

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Solution

The fourth proportional to 396,388, 547,015.44 and 237,412 is: 327,628.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,388 : 547,015.44 = 237,412 : x
  2. Step 2: Convert to fraction form
    396,388/547,015.44 = 237,412/x
  3. Step 3: Cross multiply
    396,388x = 547,015.44 × 237,412
  4. Step 4: Simplify right side
    396,388x = 129,868,029,641.28
  5. Step 5: Solve for x
    x = 129,868,029,641.28/396,388
  6. Step 6: Final answer
    x = 327,628.56

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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.