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Finding the Fourth Proportional to 250,659.36, 345,708 and 220,380.48

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Solution

The fourth proportional to 250,659.36, 345,708 and 220,380.48 is: 303,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,659.36 : 345,708 = 220,380.48 : x
  2. Step 2: Convert to fraction form
    250,659.36/345,708 = 220,380.48/x
  3. Step 3: Cross multiply
    250,659.36x = 345,708 × 220,380.48
  4. Step 4: Simplify right side
    250,659.36x = 76,187,294,979.84
  5. Step 5: Solve for x
    x = 76,187,294,979.84/250,659.36
  6. Step 6: Final answer
    x = 303,947.54

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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.