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Finding the Fourth Proportional to 512,144.40, 768,216.60 and 275,948.40

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Solution

The fourth proportional to 512,144.40, 768,216.60 and 275,948.40 is: 413,922.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,144.40 : 768,216.60 = 275,948.40 : x
  2. Step 2: Convert to fraction form
    512,144.40/768,216.60 = 275,948.40/x
  3. Step 3: Cross multiply
    512,144.40x = 768,216.60 × 275,948.40
  4. Step 4: Simplify right side
    512,144.40x = 211,988,141,623.44
  5. Step 5: Solve for x
    x = 211,988,141,623.44/512,144.40
  6. Step 6: Final answer
    x = 413,922.60

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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.