Home / 422,919.86-634,318.04-123,319.94

Finding the Fourth Proportional to 422,919.86, 634,318.04 and 123,319.94

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Solution

The fourth proportional to 422,919.86, 634,318.04 and 123,319.94 is: 184,961.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,919.86 : 634,318.04 = 123,319.94 : x
  2. Step 2: Convert to fraction form
    422,919.86/634,318.04 = 123,319.94/x
  3. Step 3: Cross multiply
    422,919.86x = 634,318.04 × 123,319.94
  4. Step 4: Simplify right side
    422,919.86x = 78,224,059,770.43
  5. Step 5: Solve for x
    x = 78,224,059,770.43/422,919.86
  6. Step 6: Final answer
    x = 184,961.90

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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.