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Finding the Fourth Proportional to 512,247.40, 768,363.90 and 231,764.20

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Solution

The fourth proportional to 512,247.40, 768,363.90 and 231,764.20 is: 347,643.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,247.40 : 768,363.90 = 231,764.20 : x
  2. Step 2: Convert to fraction form
    512,247.40/768,363.90 = 231,764.20/x
  3. Step 3: Cross multiply
    512,247.40x = 768,363.90 × 231,764.20
  4. Step 4: Simplify right side
    512,247.40x = 178,079,244,592.38
  5. Step 5: Solve for x
    x = 178,079,244,592.38/512,247.40
  6. Step 6: Final answer
    x = 347,643.04

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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.