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Finding the Fourth Proportional to 274,800.49, 412,259.59 and 85,256.78

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Solution

The fourth proportional to 274,800.49, 412,259.59 and 85,256.78 is: 127,903.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,800.49 : 412,259.59 = 85,256.78 : x
  2. Step 2: Convert to fraction form
    274,800.49/412,259.59 = 85,256.78/x
  3. Step 3: Cross multiply
    274,800.49x = 412,259.59 × 85,256.78
  4. Step 4: Simplify right side
    274,800.49x = 35,147,923,212.79
  5. Step 5: Solve for x
    x = 35,147,923,212.79/274,800.49
  6. Step 6: Final answer
    x = 127,903.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.