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Finding the Fourth Proportional to 250,455.88, 345,629.18 and 137,285.92

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Solution

The fourth proportional to 250,455.88, 345,629.18 and 137,285.92 is: 189,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,455.88 : 345,629.18 = 137,285.92 : x
  2. Step 2: Convert to fraction form
    250,455.88/345,629.18 = 137,285.92/x
  3. Step 3: Cross multiply
    250,455.88x = 345,629.18 × 137,285.92
  4. Step 4: Simplify right side
    250,455.88x = 47,450,017,540.57
  5. Step 5: Solve for x
    x = 47,450,017,540.57/250,455.88
  6. Step 6: Final answer
    x = 189,454.60

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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.