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Finding the Fourth Proportional to 279,625.82, 385,751.70 and 189,013.41

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Solution

The fourth proportional to 279,625.82, 385,751.70 and 189,013.41 is: 260,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,625.82 : 385,751.70 = 189,013.41 : x
  2. Step 2: Convert to fraction form
    279,625.82/385,751.70 = 189,013.41/x
  3. Step 3: Cross multiply
    279,625.82x = 385,751.70 × 189,013.41
  4. Step 4: Simplify right side
    279,625.82x = 72,912,244,230.30
  5. Step 5: Solve for x
    x = 72,912,244,230.30/279,625.82
  6. Step 6: Final answer
    x = 260,749.33

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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.