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Finding the Fourth Proportional to 250,038.78, 345,049.97 and 142,610.61

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Solution

The fourth proportional to 250,038.78, 345,049.97 and 142,610.61 is: 196,800.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,038.78 : 345,049.97 = 142,610.61 : x
  2. Step 2: Convert to fraction form
    250,038.78/345,049.97 = 142,610.61/x
  3. Step 3: Cross multiply
    250,038.78x = 345,049.97 × 142,610.61
  4. Step 4: Simplify right side
    250,038.78x = 49,207,786,702.18
  5. Step 5: Solve for x
    x = 49,207,786,702.18/250,038.78
  6. Step 6: Final answer
    x = 196,800.62

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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.