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Finding the Fourth Proportional to 327,679.58, 491,290.93 and 145,211.02

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Solution

The fourth proportional to 327,679.58, 491,290.93 and 145,211.02 is: 217,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,679.58 : 491,290.93 = 145,211.02 : x
  2. Step 2: Convert to fraction form
    327,679.58/491,290.93 = 145,211.02/x
  3. Step 3: Cross multiply
    327,679.58x = 491,290.93 × 145,211.02
  4. Step 4: Simplify right side
    327,679.58x = 71,340,856,164.22
  5. Step 5: Solve for x
    x = 71,340,856,164.22/327,679.58
  6. Step 6: Final answer
    x = 217,715.30

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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.