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Finding the Fourth Proportional to 512,601.30, 768,897.90 and 133,521.30

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Solution

The fourth proportional to 512,601.30, 768,897.90 and 133,521.30 is: 200,280.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,601.30 : 768,897.90 = 133,521.30 : x
  2. Step 2: Convert to fraction form
    512,601.30/768,897.90 = 133,521.30/x
  3. Step 3: Cross multiply
    512,601.30x = 768,897.90 × 133,521.30
  4. Step 4: Simplify right side
    512,601.30x = 102,664,247,175.27
  5. Step 5: Solve for x
    x = 102,664,247,175.27/512,601.30
  6. Step 6: Final answer
    x = 200,280.90

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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.