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Finding the Fourth Proportional to 218,217.40, 327,153.30 and 119,721.40

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Solution

The fourth proportional to 218,217.40, 327,153.30 and 119,721.40 is: 179,487.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,217.40 : 327,153.30 = 119,721.40 : x
  2. Step 2: Convert to fraction form
    218,217.40/327,153.30 = 119,721.40/x
  3. Step 3: Cross multiply
    218,217.40x = 327,153.30 × 119,721.40
  4. Step 4: Simplify right side
    218,217.40x = 39,167,251,090.62
  5. Step 5: Solve for x
    x = 39,167,251,090.62/218,217.40
  6. Step 6: Final answer
    x = 179,487.30

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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.