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Finding the Fourth Proportional to 396,377.29, 546,771.90 and 252,975.70

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Solution

The fourth proportional to 396,377.29, 546,771.90 and 252,975.70 is: 348,960.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,377.29 : 546,771.90 = 252,975.70 : x
  2. Step 2: Convert to fraction form
    396,377.29/546,771.90 = 252,975.70/x
  3. Step 3: Cross multiply
    396,377.29x = 546,771.90 × 252,975.70
  4. Step 4: Simplify right side
    396,377.29x = 138,320,004,142.83
  5. Step 5: Solve for x
    x = 138,320,004,142.83/396,377.29
  6. Step 6: Final answer
    x = 348,960.47

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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.