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Finding the Fourth Proportional to 396,378.88, 546,847.14 and 226,521.88

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Solution

The fourth proportional to 396,378.88, 546,847.14 and 226,521.88 is: 312,511.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,378.88 : 546,847.14 = 226,521.88 : x
  2. Step 2: Convert to fraction form
    396,378.88/546,847.14 = 226,521.88/x
  3. Step 3: Cross multiply
    396,378.88x = 546,847.14 × 226,521.88
  4. Step 4: Simplify right side
    396,378.88x = 123,872,842,225.42
  5. Step 5: Solve for x
    x = 123,872,842,225.42/396,378.88
  6. Step 6: Final answer
    x = 312,511.21

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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.