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Finding the Fourth Proportional to 199,234.70, 298,932.15 and 80,915.30

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Solution

The fourth proportional to 199,234.70, 298,932.15 and 80,915.30 is: 121,405.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,234.70 : 298,932.15 = 80,915.30 : x
  2. Step 2: Convert to fraction form
    199,234.70/298,932.15 = 80,915.30/x
  3. Step 3: Cross multiply
    199,234.70x = 298,932.15 × 80,915.30
  4. Step 4: Simplify right side
    199,234.70x = 24,188,184,596.90
  5. Step 5: Solve for x
    x = 24,188,184,596.90/199,234.70
  6. Step 6: Final answer
    x = 121,405.48

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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.