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Finding the Fourth Proportional to 228,608.10, 342,912.15 and 197,115.30

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Solution

The fourth proportional to 228,608.10, 342,912.15 and 197,115.30 is: 295,672.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,608.10 : 342,912.15 = 197,115.30 : x
  2. Step 2: Convert to fraction form
    228,608.10/342,912.15 = 197,115.30/x
  3. Step 3: Cross multiply
    228,608.10x = 342,912.15 × 197,115.30
  4. Step 4: Simplify right side
    228,608.10x = 67,593,231,320.90
  5. Step 5: Solve for x
    x = 67,593,231,320.90/228,608.10
  6. Step 6: Final answer
    x = 295,672.95

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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.