Home / 396,427.08-547,056.54-221,997.54

Finding the Fourth Proportional to 396,427.08, 547,056.54 and 221,997.54

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Solution

The fourth proportional to 396,427.08, 547,056.54 and 221,997.54 is: 306,349.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,427.08 : 547,056.54 = 221,997.54 : x
  2. Step 2: Convert to fraction form
    396,427.08/547,056.54 = 221,997.54/x
  3. Step 3: Cross multiply
    396,427.08x = 547,056.54 × 221,997.54
  4. Step 4: Simplify right side
    396,427.08x = 121,445,206,120.91
  5. Step 5: Solve for x
    x = 121,445,206,120.91/396,427.08
  6. Step 6: Final answer
    x = 306,349.42

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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.