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Finding the Fourth Proportional to 330,695.38, 495,989.92 and 90,753.22

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Solution

The fourth proportional to 330,695.38, 495,989.92 and 90,753.22 is: 136,115.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,695.38 : 495,989.92 = 90,753.22 : x
  2. Step 2: Convert to fraction form
    330,695.38/495,989.92 = 90,753.22/x
  3. Step 3: Cross multiply
    330,695.38x = 495,989.92 × 90,753.22
  4. Step 4: Simplify right side
    330,695.38x = 45,012,682,327.54
  5. Step 5: Solve for x
    x = 45,012,682,327.54/330,695.38
  6. Step 6: Final answer
    x = 136,115.24

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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.