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Finding the Fourth Proportional to 422,635.05, 583,235.15 and 231,647.85

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Solution

The fourth proportional to 422,635.05, 583,235.15 and 231,647.85 is: 319,673.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,635.05 : 583,235.15 = 231,647.85 : x
  2. Step 2: Convert to fraction form
    422,635.05/583,235.15 = 231,647.85/x
  3. Step 3: Cross multiply
    422,635.05x = 583,235.15 × 231,647.85
  4. Step 4: Simplify right side
    422,635.05x = 135,105,166,204.87
  5. Step 5: Solve for x
    x = 135,105,166,204.87/422,635.05
  6. Step 6: Final answer
    x = 319,673.36

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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.