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Finding the Fourth Proportional to 272,606.43, 408,909.64 and 122,671.55

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Solution

The fourth proportional to 272,606.43, 408,909.64 and 122,671.55 is: 184,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,606.43 : 408,909.64 = 122,671.55 : x
  2. Step 2: Convert to fraction form
    272,606.43/408,909.64 = 122,671.55/x
  3. Step 3: Cross multiply
    272,606.43x = 408,909.64 × 122,671.55
  4. Step 4: Simplify right side
    272,606.43x = 50,161,579,042.06
  5. Step 5: Solve for x
    x = 50,161,579,042.06/272,606.43
  6. Step 6: Final answer
    x = 184,007.33

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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.