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Finding the Fourth Proportional to 216,363.84, 324,561.96 and 66,708.24

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Solution

The fourth proportional to 216,363.84, 324,561.96 and 66,708.24 is: 100,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,363.84 : 324,561.96 = 66,708.24 : x
  2. Step 2: Convert to fraction form
    216,363.84/324,561.96 = 66,708.24/x
  3. Step 3: Cross multiply
    216,363.84x = 324,561.96 × 66,708.24
  4. Step 4: Simplify right side
    216,363.84x = 21,650,957,122.55
  5. Step 5: Solve for x
    x = 21,650,957,122.55/216,363.84
  6. Step 6: Final answer
    x = 100,067.35

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1.5x scale

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.