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Finding the Fourth Proportional to 216,615.87, 324,785.39 and 104,072.18

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Solution

The fourth proportional to 216,615.87, 324,785.39 and 104,072.18 is: 156,041.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,615.87 : 324,785.39 = 104,072.18 : x
  2. Step 2: Convert to fraction form
    216,615.87/324,785.39 = 104,072.18/x
  3. Step 3: Cross multiply
    216,615.87x = 324,785.39 × 104,072.18
  4. Step 4: Simplify right side
    216,615.87x = 33,801,121,425.16
  5. Step 5: Solve for x
    x = 33,801,121,425.16/216,615.87
  6. Step 6: Final answer
    x = 156,041.76

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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.