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Finding the Fourth Proportional to 250,564.64, 345,788.56 and 137,390.88

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Solution

The fourth proportional to 250,564.64, 345,788.56 and 137,390.88 is: 189,604.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,564.64 : 345,788.56 = 137,390.88 : x
  2. Step 2: Convert to fraction form
    250,564.64/345,788.56 = 137,390.88/x
  3. Step 3: Cross multiply
    250,564.64x = 345,788.56 × 137,390.88
  4. Step 4: Simplify right side
    250,564.64x = 47,508,194,552.33
  5. Step 5: Solve for x
    x = 47,508,194,552.33/250,564.64
  6. Step 6: Final answer
    x = 189,604.54

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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.