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Finding the Fourth Proportional to 143,213.13, 214,918.31 and 49,718.88

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Solution

The fourth proportional to 143,213.13, 214,918.31 and 49,718.88 is: 74,612.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,213.13 : 214,918.31 = 49,718.88 : x
  2. Step 2: Convert to fraction form
    143,213.13/214,918.31 = 49,718.88/x
  3. Step 3: Cross multiply
    143,213.13x = 214,918.31 × 49,718.88
  4. Step 4: Simplify right side
    143,213.13x = 10,685,497,664.69
  5. Step 5: Solve for x
    x = 10,685,497,664.69/143,213.13
  6. Step 6: Final answer
    x = 74,612.56

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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.