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Finding the Fourth Proportional to 548,115.30, 822,172.95 and 311,919.30

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Solution

The fourth proportional to 548,115.30, 822,172.95 and 311,919.30 is: 467,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,115.30 : 822,172.95 = 311,919.30 : x
  2. Step 2: Convert to fraction form
    548,115.30/822,172.95 = 311,919.30/x
  3. Step 3: Cross multiply
    548,115.30x = 822,172.95 × 311,919.30
  4. Step 4: Simplify right side
    548,115.30x = 256,451,611,042.94
  5. Step 5: Solve for x
    x = 256,451,611,042.94/548,115.30
  6. Step 6: Final answer
    x = 467,878.95

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Similar ratio
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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.