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Finding the Fourth Proportional to 512,010.75, 768,016.14 and 138,033.75

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Solution

The fourth proportional to 512,010.75, 768,016.14 and 138,033.75 is: 207,050.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,010.75 : 768,016.14 = 138,033.75 : x
  2. Step 2: Convert to fraction form
    512,010.75/768,016.14 = 138,033.75/x
  3. Step 3: Cross multiply
    512,010.75x = 768,016.14 × 138,033.75
  4. Step 4: Simplify right side
    512,010.75x = 106,012,147,864.73
  5. Step 5: Solve for x
    x = 106,012,147,864.73/512,010.75
  6. Step 6: Final answer
    x = 207,050.63

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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.