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Finding the Fourth Proportional to 171,328.80, 256,845.36 and 82,460.04

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Solution

The fourth proportional to 171,328.80, 256,845.36 and 82,460.04 is: 123,618.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,328.80 : 256,845.36 = 82,460.04 : x
  2. Step 2: Convert to fraction form
    171,328.80/256,845.36 = 82,460.04/x
  3. Step 3: Cross multiply
    171,328.80x = 256,845.36 × 82,460.04
  4. Step 4: Simplify right side
    171,328.80x = 21,179,478,659.41
  5. Step 5: Solve for x
    x = 21,179,478,659.41/171,328.80
  6. Step 6: Final answer
    x = 123,618.91

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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.