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Finding the Fourth Proportional to 272,612, 408,571.76 and 122,691.68

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Solution

The fourth proportional to 272,612, 408,571.76 and 122,691.68 is: 183,881.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,612 : 408,571.76 = 122,691.68 : x
  2. Step 2: Convert to fraction form
    272,612/408,571.76 = 122,691.68/x
  3. Step 3: Cross multiply
    272,612x = 408,571.76 × 122,691.68
  4. Step 4: Simplify right side
    272,612x = 50,128,355,634.96
  5. Step 5: Solve for x
    x = 50,128,355,634.96/272,612
  6. Step 6: Final answer
    x = 183,881.69

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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.