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Finding the Fourth Proportional to 250,661.45, 345,910.45 and 135,942.63

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Solution

The fourth proportional to 250,661.45, 345,910.45 and 135,942.63 is: 187,599.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,661.45 : 345,910.45 = 135,942.63 : x
  2. Step 2: Convert to fraction form
    250,661.45/345,910.45 = 135,942.63/x
  3. Step 3: Cross multiply
    250,661.45x = 345,910.45 × 135,942.63
  4. Step 4: Simplify right side
    250,661.45x = 47,023,975,977.63
  5. Step 5: Solve for x
    x = 47,023,975,977.63/250,661.45
  6. Step 6: Final answer
    x = 187,599.55

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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.