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Finding the Fourth Proportional to 250,857.75, 346,183.70 and 137,687.79

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Solution

The fourth proportional to 250,857.75, 346,183.70 and 137,687.79 is: 190,009.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,857.75 : 346,183.70 = 137,687.79 : x
  2. Step 2: Convert to fraction form
    250,857.75/346,183.70 = 137,687.79/x
  3. Step 3: Cross multiply
    250,857.75x = 346,183.70 × 137,687.79
  4. Step 4: Simplify right side
    250,857.75x = 47,665,267,898.58
  5. Step 5: Solve for x
    x = 47,665,267,898.58/250,857.75
  6. Step 6: Final answer
    x = 190,009.15

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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.