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Finding the Fourth Proportional to 210,752.26, 315,805.20 and 143,198.26

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Solution

The fourth proportional to 210,752.26, 315,805.20 and 143,198.26 is: 214,577.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,752.26 : 315,805.20 = 143,198.26 : x
  2. Step 2: Convert to fraction form
    210,752.26/315,805.20 = 143,198.26/x
  3. Step 3: Cross multiply
    210,752.26x = 315,805.20 × 143,198.26
  4. Step 4: Simplify right side
    210,752.26x = 45,222,753,812.45
  5. Step 5: Solve for x
    x = 45,222,753,812.45/210,752.26
  6. Step 6: Final answer
    x = 214,577.79

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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.