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Finding the Fourth Proportional to 396,762.45, 547,532.03 and 215,474.43

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Solution

The fourth proportional to 396,762.45, 547,532.03 and 215,474.43 is: 297,354.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,762.45 : 547,532.03 = 215,474.43 : x
  2. Step 2: Convert to fraction form
    396,762.45/547,532.03 = 215,474.43/x
  3. Step 3: Cross multiply
    396,762.45x = 547,532.03 × 215,474.43
  4. Step 4: Simplify right side
    396,762.45x = 117,979,152,070.99
  5. Step 5: Solve for x
    x = 117,979,152,070.99/396,762.45
  6. Step 6: Final answer
    x = 297,354.63

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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.