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Finding the Fourth Proportional to 330,385.26, 495,610.56 and 105,689.28

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Solution

The fourth proportional to 330,385.26, 495,610.56 and 105,689.28 is: 158,544.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,385.26 : 495,610.56 = 105,689.28 : x
  2. Step 2: Convert to fraction form
    330,385.26/495,610.56 = 105,689.28/x
  3. Step 3: Cross multiply
    330,385.26x = 495,610.56 × 105,689.28
  4. Step 4: Simplify right side
    330,385.26x = 52,380,723,246.80
  5. Step 5: Solve for x
    x = 52,380,723,246.80/330,385.26
  6. Step 6: Final answer
    x = 158,544.37

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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.