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Finding the Fourth Proportional to 329,760.60, 494,640.90 and 80,442.60

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Solution

The fourth proportional to 329,760.60, 494,640.90 and 80,442.60 is: 120,663.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,760.60 : 494,640.90 = 80,442.60 : x
  2. Step 2: Convert to fraction form
    329,760.60/494,640.90 = 80,442.60/x
  3. Step 3: Cross multiply
    329,760.60x = 494,640.90 × 80,442.60
  4. Step 4: Simplify right side
    329,760.60x = 39,790,200,062.34
  5. Step 5: Solve for x
    x = 39,790,200,062.34/329,760.60
  6. Step 6: Final answer
    x = 120,663.90

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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.