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Finding the Fourth Proportional to 396,679.30, 547,280.63 and 253,523.14

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Solution

The fourth proportional to 396,679.30, 547,280.63 and 253,523.14 is: 349,774.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,679.30 : 547,280.63 = 253,523.14 : x
  2. Step 2: Convert to fraction form
    396,679.30/547,280.63 = 253,523.14/x
  3. Step 3: Cross multiply
    396,679.30x = 547,280.63 × 253,523.14
  4. Step 4: Simplify right side
    396,679.30x = 138,748,302,511.16
  5. Step 5: Solve for x
    x = 138,748,302,511.16/396,679.30
  6. Step 6: Final answer
    x = 349,774.50

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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.