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Finding the Fourth Proportional to 330,433.56, 495,650.84 and 81,115.56

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Solution

The fourth proportional to 330,433.56, 495,650.84 and 81,115.56 is: 121,673.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,433.56 : 495,650.84 = 81,115.56 : x
  2. Step 2: Convert to fraction form
    330,433.56/495,650.84 = 81,115.56/x
  3. Step 3: Cross multiply
    330,433.56x = 495,650.84 × 81,115.56
  4. Step 4: Simplify right side
    330,433.56x = 40,204,995,045.49
  5. Step 5: Solve for x
    x = 40,204,995,045.49/330,433.56
  6. Step 6: Final answer
    x = 121,673.46

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1.5x scale

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.