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Finding the Fourth Proportional to 330,072.58, 495,172.52 and 140,529.48

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Solution

The fourth proportional to 330,072.58, 495,172.52 and 140,529.48 is: 210,821.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,072.58 : 495,172.52 = 140,529.48 : x
  2. Step 2: Convert to fraction form
    330,072.58/495,172.52 = 140,529.48/x
  3. Step 3: Cross multiply
    330,072.58x = 495,172.52 × 140,529.48
  4. Step 4: Simplify right side
    330,072.58x = 69,586,336,745.89
  5. Step 5: Solve for x
    x = 69,586,336,745.89/330,072.58
  6. Step 6: Final answer
    x = 210,821.32

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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.