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Finding the Fourth Proportional to 279,542.50, 421,180.94 and 252,922.61

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Solution

The fourth proportional to 279,542.50, 421,180.94 and 252,922.61 is: 381,073.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,542.50 : 421,180.94 = 252,922.61 : x
  2. Step 2: Convert to fraction form
    279,542.50/421,180.94 = 252,922.61/x
  3. Step 3: Cross multiply
    279,542.50x = 421,180.94 × 252,922.61
  4. Step 4: Simplify right side
    279,542.50x = 106,526,184,312.31
  5. Step 5: Solve for x
    x = 106,526,184,312.31/279,542.50
  6. Step 6: Final answer
    x = 381,073.31

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.