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Finding the Fourth Proportional to 330,014.37, 495,229.79 and 140,474.43

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Solution

The fourth proportional to 330,014.37, 495,229.79 and 140,474.43 is: 210,800.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,014.37 : 495,229.79 = 140,474.43 : x
  2. Step 2: Convert to fraction form
    330,014.37/495,229.79 = 140,474.43/x
  3. Step 3: Cross multiply
    330,014.37x = 495,229.79 × 140,474.43
  4. Step 4: Simplify right side
    330,014.37x = 69,567,123,121.79
  5. Step 5: Solve for x
    x = 69,567,123,121.79/330,014.37
  6. Step 6: Final answer
    x = 210,800.29

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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.