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Finding the Fourth Proportional to 396,806.31, 547,749.72 and 276,017.67

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Solution

The fourth proportional to 396,806.31, 547,749.72 and 276,017.67 is: 381,013.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,806.31 : 547,749.72 = 276,017.67 : x
  2. Step 2: Convert to fraction form
    396,806.31/547,749.72 = 276,017.67/x
  3. Step 3: Cross multiply
    396,806.31x = 547,749.72 × 276,017.67
  4. Step 4: Simplify right side
    396,806.31x = 151,188,601,457.55
  5. Step 5: Solve for x
    x = 151,188,601,457.55/396,806.31
  6. Step 6: Final answer
    x = 381,013.60

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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.