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Finding the Fourth Proportional to 171,325.28, 256,840.11 and 82,456.52

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Solution

The fourth proportional to 171,325.28, 256,840.11 and 82,456.52 is: 123,613.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,325.28 : 256,840.11 = 82,456.52 : x
  2. Step 2: Convert to fraction form
    171,325.28/256,840.11 = 82,456.52/x
  3. Step 3: Cross multiply
    171,325.28x = 256,840.11 × 82,456.52
  4. Step 4: Simplify right side
    171,325.28x = 21,178,141,667.02
  5. Step 5: Solve for x
    x = 21,178,141,667.02/171,325.28
  6. Step 6: Final answer
    x = 123,613.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.