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Finding the Fourth Proportional to 422,640.28, 634,058.70 and 123,152.68

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Solution

The fourth proportional to 422,640.28, 634,058.70 and 123,152.68 is: 184,757.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,640.28 : 634,058.70 = 123,152.68 : x
  2. Step 2: Convert to fraction form
    422,640.28/634,058.70 = 123,152.68/x
  3. Step 3: Cross multiply
    422,640.28x = 634,058.70 × 123,152.68
  4. Step 4: Simplify right side
    422,640.28x = 78,086,028,182.32
  5. Step 5: Solve for x
    x = 78,086,028,182.32/422,640.28
  6. Step 6: Final answer
    x = 184,757.66

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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.