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Finding the Fourth Proportional to 327,246.40, 490,869.60 and 325,172.80

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Solution

The fourth proportional to 327,246.40, 490,869.60 and 325,172.80 is: 487,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,246.40 : 490,869.60 = 325,172.80 : x
  2. Step 2: Convert to fraction form
    327,246.40/490,869.60 = 325,172.80/x
  3. Step 3: Cross multiply
    327,246.40x = 490,869.60 × 325,172.80
  4. Step 4: Simplify right side
    327,246.40x = 159,617,442,266.88
  5. Step 5: Solve for x
    x = 159,617,442,266.88/327,246.40
  6. Step 6: Final answer
    x = 487,759.20

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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.