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Finding the Fourth Proportional to 217,071.77, 325,654.43 and 67,309.04

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Solution

The fourth proportional to 217,071.77, 325,654.43 and 67,309.04 is: 100,978.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,071.77 : 325,654.43 = 67,309.04 : x
  2. Step 2: Convert to fraction form
    217,071.77/325,654.43 = 67,309.04/x
  3. Step 3: Cross multiply
    217,071.77x = 325,654.43 × 67,309.04
  4. Step 4: Simplify right side
    217,071.77x = 21,919,487,532.64
  5. Step 5: Solve for x
    x = 21,919,487,532.64/217,071.77
  6. Step 6: Final answer
    x = 100,978.07

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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.