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Finding the Fourth Proportional to 330,540.75, 495,846.36 and 105,820.83

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Solution

The fourth proportional to 330,540.75, 495,846.36 and 105,820.83 is: 158,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,540.75 : 495,846.36 = 105,820.83 : x
  2. Step 2: Convert to fraction form
    330,540.75/495,846.36 = 105,820.83/x
  3. Step 3: Cross multiply
    330,540.75x = 495,846.36 × 105,820.83
  4. Step 4: Simplify right side
    330,540.75x = 52,470,873,367.68
  5. Step 5: Solve for x
    x = 52,470,873,367.68/330,540.75
  6. Step 6: Final answer
    x = 158,742.53

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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.