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Finding the Fourth Proportional to 250,999.97, 346,375.64 and 137,821.91

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Solution

The fourth proportional to 250,999.97, 346,375.64 and 137,821.91 is: 190,191.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,999.97 : 346,375.64 = 137,821.91 : x
  2. Step 2: Convert to fraction form
    250,999.97/346,375.64 = 137,821.91/x
  3. Step 3: Cross multiply
    250,999.97x = 346,375.64 × 137,821.91
  4. Step 4: Simplify right side
    250,999.97x = 47,738,150,894.95
  5. Step 5: Solve for x
    x = 47,738,150,894.95/250,999.97
  6. Step 6: Final answer
    x = 190,191.86

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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.