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Finding the Fourth Proportional to 396,801.23, 547,742.73 and 276,012.61

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Solution

The fourth proportional to 396,801.23, 547,742.73 and 276,012.61 is: 381,006.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,801.23 : 547,742.73 = 276,012.61 : x
  2. Step 2: Convert to fraction form
    396,801.23/547,742.73 = 276,012.61/x
  3. Step 3: Cross multiply
    396,801.23x = 547,742.73 × 276,012.61
  4. Step 4: Simplify right side
    396,801.23x = 151,183,902,486.28
  5. Step 5: Solve for x
    x = 151,183,902,486.28/396,801.23
  6. Step 6: Final answer
    x = 381,006.64

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1.5x scale

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.