Home / 327,692.89-491,730.50-138,141.75

Finding the Fourth Proportional to 327,692.89, 491,730.50 and 138,141.75

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Solution

The fourth proportional to 327,692.89, 491,730.50 and 138,141.75 is: 207,293.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,692.89 : 491,730.50 = 138,141.75 : x
  2. Step 2: Convert to fraction form
    327,692.89/491,730.50 = 138,141.75/x
  3. Step 3: Cross multiply
    327,692.89x = 491,730.50 × 138,141.75
  4. Step 4: Simplify right side
    327,692.89x = 67,928,511,798.38
  5. Step 5: Solve for x
    x = 67,928,511,798.38/327,692.89
  6. Step 6: Final answer
    x = 207,293.21

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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.