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Finding the Fourth Proportional to 216,974.62, 325,513.89 and 90,544.53

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Solution

The fourth proportional to 216,974.62, 325,513.89 and 90,544.53 is: 135,838.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,974.62 : 325,513.89 = 90,544.53 : x
  2. Step 2: Convert to fraction form
    216,974.62/325,513.89 = 90,544.53/x
  3. Step 3: Cross multiply
    216,974.62x = 325,513.89 × 90,544.53
  4. Step 4: Simplify right side
    216,974.62x = 29,473,503,399.20
  5. Step 5: Solve for x
    x = 29,473,503,399.20/216,974.62
  6. Step 6: Final answer
    x = 135,838.48

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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.