Home / 422,830.23-634,338.64-123,334.25

Finding the Fourth Proportional to 422,830.23, 634,338.64 and 123,334.25

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Solution

The fourth proportional to 422,830.23, 634,338.64 and 123,334.25 is: 185,028.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,830.23 : 634,338.64 = 123,334.25 : x
  2. Step 2: Convert to fraction form
    422,830.23/634,338.64 = 123,334.25/x
  3. Step 3: Cross multiply
    422,830.23x = 634,338.64 × 123,334.25
  4. Step 4: Simplify right side
    422,830.23x = 78,235,677,392.89
  5. Step 5: Solve for x
    x = 78,235,677,392.89/422,830.23
  6. Step 6: Final answer
    x = 185,028.58

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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.