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Finding the Fourth Proportional to 330,514.08, 495,766.80 and 81,198.24

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Solution

The fourth proportional to 330,514.08, 495,766.80 and 81,198.24 is: 121,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,514.08 : 495,766.80 = 81,198.24 : x
  2. Step 2: Convert to fraction form
    330,514.08/495,766.80 = 81,198.24/x
  3. Step 3: Cross multiply
    330,514.08x = 495,766.80 × 81,198.24
  4. Step 4: Simplify right side
    330,514.08x = 40,255,391,610.43
  5. Step 5: Solve for x
    x = 40,255,391,610.43/330,514.08
  6. Step 6: Final answer
    x = 121,796.30

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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.