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Finding the Fourth Proportional to 250,351.70, 345,485.49 and 137,174.42

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Solution

The fourth proportional to 250,351.70, 345,485.49 and 137,174.42 is: 189,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,351.70 : 345,485.49 = 137,174.42 : x
  2. Step 2: Convert to fraction form
    250,351.70/345,485.49 = 137,174.42/x
  3. Step 3: Cross multiply
    250,351.70x = 345,485.49 × 137,174.42
  4. Step 4: Simplify right side
    250,351.70x = 47,391,771,709.17
  5. Step 5: Solve for x
    x = 47,391,771,709.17/250,351.70
  6. Step 6: Final answer
    x = 189,300.78

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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.