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Finding the Fourth Proportional to 207,474.40, 311,168.40 and 89,149.60

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Solution

The fourth proportional to 207,474.40, 311,168.40 and 89,149.60 is: 133,705.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,474.40 : 311,168.40 = 89,149.60 : x
  2. Step 2: Convert to fraction form
    207,474.40/311,168.40 = 89,149.60/x
  3. Step 3: Cross multiply
    207,474.40x = 311,168.40 × 89,149.60
  4. Step 4: Simplify right side
    207,474.40x = 27,740,538,392.64
  5. Step 5: Solve for x
    x = 27,740,538,392.64/207,474.40
  6. Step 6: Final answer
    x = 133,705.84

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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.