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Finding the Fourth Proportional to 422,906.72, 583,612.08 and 231,921.52

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Solution

The fourth proportional to 422,906.72, 583,612.08 and 231,921.52 is: 320,052.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,906.72 : 583,612.08 = 231,921.52 : x
  2. Step 2: Convert to fraction form
    422,906.72/583,612.08 = 231,921.52/x
  3. Step 3: Cross multiply
    422,906.72x = 583,612.08 × 231,921.52
  4. Step 4: Simplify right side
    422,906.72x = 135,352,200,683.96
  5. Step 5: Solve for x
    x = 135,352,200,683.96/422,906.72
  6. Step 6: Final answer
    x = 320,052.14

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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.