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Finding the Fourth Proportional to 250,187.88, 345,255.78 and 137,010.60

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Solution

The fourth proportional to 250,187.88, 345,255.78 and 137,010.60 is: 189,072.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,187.88 : 345,255.78 = 137,010.60 : x
  2. Step 2: Convert to fraction form
    250,187.88/345,255.78 = 137,010.60/x
  3. Step 3: Cross multiply
    250,187.88x = 345,255.78 × 137,010.60
  4. Step 4: Simplify right side
    250,187.88x = 47,303,701,571.27
  5. Step 5: Solve for x
    x = 47,303,701,571.27/250,187.88
  6. Step 6: Final answer
    x = 189,072.71

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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.