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Finding the Fourth Proportional to 216,474.60, 324,711.90 and 66,701.55

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Solution

The fourth proportional to 216,474.60, 324,711.90 and 66,701.55 is: 100,052.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,474.60 : 324,711.90 = 66,701.55 : x
  2. Step 2: Convert to fraction form
    216,474.60/324,711.90 = 66,701.55/x
  3. Step 3: Cross multiply
    216,474.60x = 324,711.90 × 66,701.55
  4. Step 4: Simplify right side
    216,474.60x = 21,658,787,033.45
  5. Step 5: Solve for x
    x = 21,658,787,033.45/216,474.60
  6. Step 6: Final answer
    x = 100,052.33

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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.