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Finding the Fourth Proportional to 422,896.02, 634,276.44 and 123,306.54

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Solution

The fourth proportional to 422,896.02, 634,276.44 and 123,306.54 is: 184,940.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,896.02 : 634,276.44 = 123,306.54 : x
  2. Step 2: Convert to fraction form
    422,896.02/634,276.44 = 123,306.54/x
  3. Step 3: Cross multiply
    422,896.02x = 634,276.44 × 123,306.54
  4. Step 4: Simplify right side
    422,896.02x = 78,210,433,219.92
  5. Step 5: Solve for x
    x = 78,210,433,219.92/422,896.02
  6. Step 6: Final answer
    x = 184,940.10

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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.