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Finding the Fourth Proportional to 250,661.71, 345,910.80 and 135,942.88

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Solution

The fourth proportional to 250,661.71, 345,910.80 and 135,942.88 is: 187,599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,661.71 : 345,910.80 = 135,942.88 : x
  2. Step 2: Convert to fraction form
    250,661.71/345,910.80 = 135,942.88/x
  3. Step 3: Cross multiply
    250,661.71x = 345,910.80 × 135,942.88
  4. Step 4: Simplify right side
    250,661.71x = 47,024,109,695.39
  5. Step 5: Solve for x
    x = 47,024,109,695.39/250,661.71
  6. Step 6: Final answer
    x = 187,599.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.