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Finding the Fourth Proportional to 217,347.55, 325,993.60 and 84,136.66

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Solution

The fourth proportional to 217,347.55, 325,993.60 and 84,136.66 is: 126,194.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,347.55 : 325,993.60 = 84,136.66 : x
  2. Step 2: Convert to fraction form
    217,347.55/325,993.60 = 84,136.66/x
  3. Step 3: Cross multiply
    217,347.55x = 325,993.60 × 84,136.66
  4. Step 4: Simplify right side
    217,347.55x = 27,428,012,685.38
  5. Step 5: Solve for x
    x = 27,428,012,685.38/217,347.55
  6. Step 6: Final answer
    x = 126,194.26

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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.