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Finding the Fourth Proportional to 422,622.60, 634,037.63 and 123,105.96

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Solution

The fourth proportional to 422,622.60, 634,037.63 and 123,105.96 is: 184,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,622.60 : 634,037.63 = 123,105.96 : x
  2. Step 2: Convert to fraction form
    422,622.60/634,037.63 = 123,105.96/x
  3. Step 3: Cross multiply
    422,622.60x = 634,037.63 × 123,105.96
  4. Step 4: Simplify right side
    422,622.60x = 78,053,810,501.75
  5. Step 5: Solve for x
    x = 78,053,810,501.75/422,622.60
  6. Step 6: Final answer
    x = 184,689.16

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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.