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Finding the Fourth Proportional to 207,364.06, 311,121.06 and 72,448.12

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Solution

The fourth proportional to 207,364.06, 311,121.06 and 72,448.12 is: 108,698.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,364.06 : 311,121.06 = 72,448.12 : x
  2. Step 2: Convert to fraction form
    207,364.06/311,121.06 = 72,448.12/x
  3. Step 3: Cross multiply
    207,364.06x = 311,121.06 × 72,448.12
  4. Step 4: Simplify right side
    207,364.06x = 22,540,135,889.41
  5. Step 5: Solve for x
    x = 22,540,135,889.41/207,364.06
  6. Step 6: Final answer
    x = 108,698.37

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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.