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Finding the Fourth Proportional to 171,235, 256,853.31 and 60,427

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Solution

The fourth proportional to 171,235, 256,853.31 and 60,427 is: 90,640.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,235 : 256,853.31 = 60,427 : x
  2. Step 2: Convert to fraction form
    171,235/256,853.31 = 60,427/x
  3. Step 3: Cross multiply
    171,235x = 256,853.31 × 60,427
  4. Step 4: Simplify right side
    171,235x = 15,520,874,963.37
  5. Step 5: Solve for x
    x = 15,520,874,963.37/171,235
  6. Step 6: Final answer
    x = 90,640.79

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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.