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Finding the Fourth Proportional to 396,390.84, 547,019.73 and 226,628.52

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Solution

The fourth proportional to 396,390.84, 547,019.73 and 226,628.52 is: 312,747.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,390.84 : 547,019.73 = 226,628.52 : x
  2. Step 2: Convert to fraction form
    396,390.84/547,019.73 = 226,628.52/x
  3. Step 3: Cross multiply
    396,390.84x = 547,019.73 × 226,628.52
  4. Step 4: Simplify right side
    396,390.84x = 123,970,271,820.70
  5. Step 5: Solve for x
    x = 123,970,271,820.70/396,390.84
  6. Step 6: Final answer
    x = 312,747.57

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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.