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Finding the Fourth Proportional to 217,991.10, 304,487.70 and 217,991.10

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Solution

The fourth proportional to 217,991.10, 304,487.70 and 217,991.10 is: 304,487.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,991.10 : 304,487.70 = 217,991.10 : x
  2. Step 2: Convert to fraction form
    217,991.10/304,487.70 = 217,991.10/x
  3. Step 3: Cross multiply
    217,991.10x = 304,487.70 × 217,991.10
  4. Step 4: Simplify right side
    217,991.10x = 66,375,608,659.47
  5. Step 5: Solve for x
    x = 66,375,608,659.47/217,991.10
  6. Step 6: Final answer
    x = 304,487.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.