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Finding the Fourth Proportional to 219,004.80, 327,892.80 and 212,860.80

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Solution

The fourth proportional to 219,004.80, 327,892.80 and 212,860.80 is: 318,694.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,004.80 : 327,892.80 = 212,860.80 : x
  2. Step 2: Convert to fraction form
    219,004.80/327,892.80 = 212,860.80/x
  3. Step 3: Cross multiply
    219,004.80x = 327,892.80 × 212,860.80
  4. Step 4: Simplify right side
    219,004.80x = 69,795,523,722.24
  5. Step 5: Solve for x
    x = 69,795,523,722.24/219,004.80
  6. Step 6: Final answer
    x = 318,694.04

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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.