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Finding the Fourth Proportional to 392,871.88, 589,121.11 and 179,577.28

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Solution

The fourth proportional to 392,871.88, 589,121.11 and 179,577.28 is: 269,280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,871.88 : 589,121.11 = 179,577.28 : x
  2. Step 2: Convert to fraction form
    392,871.88/589,121.11 = 179,577.28/x
  3. Step 3: Cross multiply
    392,871.88x = 589,121.11 × 179,577.28
  4. Step 4: Simplify right side
    392,871.88x = 105,792,766,524.38
  5. Step 5: Solve for x
    x = 105,792,766,524.38/392,871.88
  6. Step 6: Final answer
    x = 269,280.58

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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.