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Finding the Fourth Proportional to 216,477.45, 324,723.60 and 66,716.55

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Solution

The fourth proportional to 216,477.45, 324,723.60 and 66,716.55 is: 100,077.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,477.45 : 324,723.60 = 66,716.55 : x
  2. Step 2: Convert to fraction form
    216,477.45/324,723.60 = 66,716.55/x
  3. Step 3: Cross multiply
    216,477.45x = 324,723.60 × 66,716.55
  4. Step 4: Simplify right side
    216,477.45x = 21,664,438,295.58
  5. Step 5: Solve for x
    x = 21,664,438,295.58/216,477.45
  6. Step 6: Final answer
    x = 100,077.11

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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.