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Finding the Fourth Proportional to 216,306.69, 324,460.77 and 66,545.97

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Solution

The fourth proportional to 216,306.69, 324,460.77 and 66,545.97 is: 99,819.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,306.69 : 324,460.77 = 66,545.97 : x
  2. Step 2: Convert to fraction form
    216,306.69/324,460.77 = 66,545.97/x
  3. Step 3: Cross multiply
    216,306.69x = 324,460.77 × 66,545.97
  4. Step 4: Simplify right side
    216,306.69x = 21,591,556,666.60
  5. Step 5: Solve for x
    x = 21,591,556,666.60/216,306.69
  6. Step 6: Final answer
    x = 99,819.18

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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.