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Finding the Fourth Proportional to 396,230.38, 546,785.51 and 221,800.52

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Solution

The fourth proportional to 396,230.38, 546,785.51 and 221,800.52 is: 306,077.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,230.38 : 546,785.51 = 221,800.52 : x
  2. Step 2: Convert to fraction form
    396,230.38/546,785.51 = 221,800.52/x
  3. Step 3: Cross multiply
    396,230.38x = 546,785.51 × 221,800.52
  4. Step 4: Simplify right side
    396,230.38x = 121,277,310,704.43
  5. Step 5: Solve for x
    x = 121,277,310,704.43/396,230.38
  6. Step 6: Final answer
    x = 306,077.77

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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.