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Finding the Fourth Proportional to 276,211.22, 381,223.80 and 172,893.33

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Solution

The fourth proportional to 276,211.22, 381,223.80 and 172,893.33 is: 238,625.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,211.22 : 381,223.80 = 172,893.33 : x
  2. Step 2: Convert to fraction form
    276,211.22/381,223.80 = 172,893.33/x
  3. Step 3: Cross multiply
    276,211.22x = 381,223.80 × 172,893.33
  4. Step 4: Simplify right side
    276,211.22x = 65,911,052,257.25
  5. Step 5: Solve for x
    x = 65,911,052,257.25/276,211.22
  6. Step 6: Final answer
    x = 238,625.55

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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.