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Finding the Fourth Proportional to 330,286.41, 495,371.30 and 130,540.41

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Solution

The fourth proportional to 330,286.41, 495,371.30 and 130,540.41 is: 195,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,286.41 : 495,371.30 = 130,540.41 : x
  2. Step 2: Convert to fraction form
    330,286.41/495,371.30 = 130,540.41/x
  3. Step 3: Cross multiply
    330,286.41x = 495,371.30 × 130,540.41
  4. Step 4: Simplify right side
    330,286.41x = 64,665,971,951.53
  5. Step 5: Solve for x
    x = 64,665,971,951.53/330,286.41
  6. Step 6: Final answer
    x = 195,787.56

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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.