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Finding the Fourth Proportional to 422,635.91, 634,057.67 and 123,119.12

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Solution

The fourth proportional to 422,635.91, 634,057.67 and 123,119.12 is: 184,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,635.91 : 634,057.67 = 123,119.12 : x
  2. Step 2: Convert to fraction form
    422,635.91/634,057.67 = 123,119.12/x
  3. Step 3: Cross multiply
    422,635.91x = 634,057.67 × 123,119.12
  4. Step 4: Simplify right side
    422,635.91x = 78,064,618,573.77
  5. Step 5: Solve for x
    x = 78,064,618,573.77/422,635.91
  6. Step 6: Final answer
    x = 184,708.91

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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.