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Finding the Fourth Proportional to 422,440.86, 633,662.46 and 122,928.66

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Solution

The fourth proportional to 422,440.86, 633,662.46 and 122,928.66 is: 184,393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,440.86 : 633,662.46 = 122,928.66 : x
  2. Step 2: Convert to fraction form
    422,440.86/633,662.46 = 122,928.66/x
  3. Step 3: Cross multiply
    422,440.86x = 633,662.46 × 122,928.66
  4. Step 4: Simplify right side
    422,440.86x = 77,895,277,100.10
  5. Step 5: Solve for x
    x = 77,895,277,100.10/422,440.86
  6. Step 6: Final answer
    x = 184,393.33

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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.