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Finding the Fourth Proportional to 330,540.54, 495,822.55 and 105,871.78

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Solution

The fourth proportional to 330,540.54, 495,822.55 and 105,871.78 is: 158,811.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,540.54 : 495,822.55 = 105,871.78 : x
  2. Step 2: Convert to fraction form
    330,540.54/495,822.55 = 105,871.78/x
  3. Step 3: Cross multiply
    330,540.54x = 495,822.55 × 105,871.78
  4. Step 4: Simplify right side
    330,540.54x = 52,493,615,932.64
  5. Step 5: Solve for x
    x = 52,493,615,932.64/330,540.54
  6. Step 6: Final answer
    x = 158,811.43

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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.