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Finding the Fourth Proportional to 330,336.75, 495,578.82 and 105,710.68

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Solution

The fourth proportional to 330,336.75, 495,578.82 and 105,710.68 is: 158,589.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,336.75 : 495,578.82 = 105,710.68 : x
  2. Step 2: Convert to fraction form
    330,336.75/495,578.82 = 105,710.68/x
  3. Step 3: Cross multiply
    330,336.75x = 495,578.82 × 105,710.68
  4. Step 4: Simplify right side
    330,336.75x = 52,387,971,049.35
  5. Step 5: Solve for x
    x = 52,387,971,049.35/330,336.75
  6. Step 6: Final answer
    x = 158,589.59

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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.