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Finding the Fourth Proportional to 422,091.09, 633,237.27 and 137,781.95

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Solution

The fourth proportional to 422,091.09, 633,237.27 and 137,781.95 is: 206,705.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,091.09 : 633,237.27 = 137,781.95 : x
  2. Step 2: Convert to fraction form
    422,091.09/633,237.27 = 137,781.95/x
  3. Step 3: Cross multiply
    422,091.09x = 633,237.27 × 137,781.95
  4. Step 4: Simplify right side
    422,091.09x = 87,248,662,707.09
  5. Step 5: Solve for x
    x = 87,248,662,707.09/422,091.09
  6. Step 6: Final answer
    x = 206,705.77

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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.