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Finding the Fourth Proportional to 218,139.10, 327,208.65 and 218,139.10

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Solution

The fourth proportional to 218,139.10, 327,208.65 and 218,139.10 is: 327,208.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,139.10 : 327,208.65 = 218,139.10 : x
  2. Step 2: Convert to fraction form
    218,139.10/327,208.65 = 218,139.10/x
  3. Step 3: Cross multiply
    218,139.10x = 327,208.65 × 218,139.10
  4. Step 4: Simplify right side
    218,139.10x = 71,377,000,423.22
  5. Step 5: Solve for x
    x = 71,377,000,423.22/218,139.10
  6. Step 6: Final answer
    x = 327,208.65

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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.