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Finding the Fourth Proportional to 250,489.56, 345,675.60 and 137,309.88

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Solution

The fourth proportional to 250,489.56, 345,675.60 and 137,309.88 is: 189,487.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,489.56 : 345,675.60 = 137,309.88 : x
  2. Step 2: Convert to fraction form
    250,489.56/345,675.60 = 137,309.88/x
  3. Step 3: Cross multiply
    250,489.56x = 345,675.60 × 137,309.88
  4. Step 4: Simplify right side
    250,489.56x = 47,464,675,154.93
  5. Step 5: Solve for x
    x = 47,464,675,154.93/250,489.56
  6. Step 6: Final answer
    x = 189,487.64

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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.