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Finding the Fourth Proportional to 329,774.20, 494,661.30 and 80,456.20

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Solution

The fourth proportional to 329,774.20, 494,661.30 and 80,456.20 is: 120,684.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,774.20 : 494,661.30 = 80,456.20 : x
  2. Step 2: Convert to fraction form
    329,774.20/494,661.30 = 80,456.20/x
  3. Step 3: Cross multiply
    329,774.20x = 494,661.30 × 80,456.20
  4. Step 4: Simplify right side
    329,774.20x = 39,798,568,485.06
  5. Step 5: Solve for x
    x = 39,798,568,485.06/329,774.20
  6. Step 6: Final answer
    x = 120,684.30

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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.