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Finding the Fourth Proportional to 340,382.45, 510,629.09 and 100,520.62

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Solution

The fourth proportional to 340,382.45, 510,629.09 and 100,520.62 is: 150,797.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,382.45 : 510,629.09 = 100,520.62 : x
  2. Step 2: Convert to fraction form
    340,382.45/510,629.09 = 100,520.62/x
  3. Step 3: Cross multiply
    340,382.45x = 510,629.09 × 100,520.62
  4. Step 4: Simplify right side
    340,382.45x = 51,328,751,691.56
  5. Step 5: Solve for x
    x = 51,328,751,691.56/340,382.45
  6. Step 6: Final answer
    x = 150,797.29

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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.