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Finding the Fourth Proportional to 396,634.72, 547,152.88 and 253,244

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Solution

The fourth proportional to 396,634.72, 547,152.88 and 253,244 is: 349,347.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,634.72 : 547,152.88 = 253,244 : x
  2. Step 2: Convert to fraction form
    396,634.72/547,152.88 = 253,244/x
  3. Step 3: Cross multiply
    396,634.72x = 547,152.88 × 253,244
  4. Step 4: Simplify right side
    396,634.72x = 138,563,183,942.72
  5. Step 5: Solve for x
    x = 138,563,183,942.72/396,634.72
  6. Step 6: Final answer
    x = 349,347.09

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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.