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Finding the Fourth Proportional to 330,295.91, 495,630.88 and 140,736.31

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Solution

The fourth proportional to 330,295.91, 495,630.88 and 140,736.31 is: 211,184.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,295.91 : 495,630.88 = 140,736.31 : x
  2. Step 2: Convert to fraction form
    330,295.91/495,630.88 = 140,736.31/x
  3. Step 3: Cross multiply
    330,295.91x = 495,630.88 × 140,736.31
  4. Step 4: Simplify right side
    330,295.91x = 69,753,259,582.33
  5. Step 5: Solve for x
    x = 69,753,259,582.33/330,295.91
  6. Step 6: Final answer
    x = 211,184.15

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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.