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Finding the Fourth Proportional to 422,845.53, 634,361.58 and 123,349.56

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Solution

The fourth proportional to 422,845.53, 634,361.58 and 123,349.56 is: 185,051.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,845.53 : 634,361.58 = 123,349.56 : x
  2. Step 2: Convert to fraction form
    422,845.53/634,361.58 = 123,349.56/x
  3. Step 3: Cross multiply
    422,845.53x = 634,361.58 × 123,349.56
  4. Step 4: Simplify right side
    422,845.53x = 78,248,221,773.90
  5. Step 5: Solve for x
    x = 78,248,221,773.90/422,845.53
  6. Step 6: Final answer
    x = 185,051.55

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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.