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Finding the Fourth Proportional to 396,879.30, 547,677.72 and 235,730.07

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Solution

The fourth proportional to 396,879.30, 547,677.72 and 235,730.07 is: 325,298.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,879.30 : 547,677.72 = 235,730.07 : x
  2. Step 2: Convert to fraction form
    396,879.30/547,677.72 = 235,730.07/x
  3. Step 3: Cross multiply
    396,879.30x = 547,677.72 × 235,730.07
  4. Step 4: Simplify right side
    396,879.30x = 129,104,107,273.04
  5. Step 5: Solve for x
    x = 129,104,107,273.04/396,879.30
  6. Step 6: Final answer
    x = 325,298.16

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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.