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Finding the Fourth Proportional to 217,958.02, 325,029.66 and 215,965.01

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Solution

The fourth proportional to 217,958.02, 325,029.66 and 215,965.01 is: 322,057.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,958.02 : 325,029.66 = 215,965.01 : x
  2. Step 2: Convert to fraction form
    217,958.02/325,029.66 = 215,965.01/x
  3. Step 3: Cross multiply
    217,958.02x = 325,029.66 × 215,965.01
  4. Step 4: Simplify right side
    217,958.02x = 70,195,033,772.20
  5. Step 5: Solve for x
    x = 70,195,033,772.20/217,958.02
  6. Step 6: Final answer
    x = 322,057.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.