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Finding the Fourth Proportional to 396,730.49, 547,861.73 and 276,201.34

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Solution

The fourth proportional to 396,730.49, 547,861.73 and 276,201.34 is: 381,417.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,730.49 : 547,861.73 = 276,201.34 : x
  2. Step 2: Convert to fraction form
    396,730.49/547,861.73 = 276,201.34/x
  3. Step 3: Cross multiply
    396,730.49x = 547,861.73 × 276,201.34
  4. Step 4: Simplify right side
    396,730.49x = 151,320,141,210.06
  5. Step 5: Solve for x
    x = 151,320,141,210.06/396,730.49
  6. Step 6: Final answer
    x = 381,417.98

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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.