Home / 422,942.58-634,403.31-123,425.74

Finding the Fourth Proportional to 422,942.58, 634,403.31 and 123,425.74

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Solution

The fourth proportional to 422,942.58, 634,403.31 and 123,425.74 is: 185,135.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,942.58 : 634,403.31 = 123,425.74 : x
  2. Step 2: Convert to fraction form
    422,942.58/634,403.31 = 123,425.74/x
  3. Step 3: Cross multiply
    422,942.58x = 634,403.31 × 123,425.74
  4. Step 4: Simplify right side
    422,942.58x = 78,301,698,325.36
  5. Step 5: Solve for x
    x = 78,301,698,325.36/422,942.58
  6. Step 6: Final answer
    x = 185,135.53

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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.