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Finding the Fourth Proportional to 218,654.01, 328,007.28 and 206,696.58

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Solution

The fourth proportional to 218,654.01, 328,007.28 and 206,696.58 is: 310,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,654.01 : 328,007.28 = 206,696.58 : x
  2. Step 2: Convert to fraction form
    218,654.01/328,007.28 = 206,696.58/x
  3. Step 3: Cross multiply
    218,654.01x = 328,007.28 × 206,696.58
  4. Step 4: Simplify right side
    218,654.01x = 67,797,982,991.10
  5. Step 5: Solve for x
    x = 67,797,982,991.10/218,654.01
  6. Step 6: Final answer
    x = 310,069.70

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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.