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Finding the Fourth Proportional to 250,705.92, 345,958.08 and 137,504.64

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Solution

The fourth proportional to 250,705.92, 345,958.08 and 137,504.64 is: 189,747.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,705.92 : 345,958.08 = 137,504.64 : x
  2. Step 2: Convert to fraction form
    250,705.92/345,958.08 = 137,504.64/x
  3. Step 3: Cross multiply
    250,705.92x = 345,958.08 × 137,504.64
  4. Step 4: Simplify right side
    250,705.92x = 47,570,841,245.49
  5. Step 5: Solve for x
    x = 47,570,841,245.49/250,705.92
  6. Step 6: Final answer
    x = 189,747.58

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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.