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Finding the Fourth Proportional to 207,957.80, 311,936.70 and 185,796.20

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Solution

The fourth proportional to 207,957.80, 311,936.70 and 185,796.20 is: 278,694.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,957.80 : 311,936.70 = 185,796.20 : x
  2. Step 2: Convert to fraction form
    207,957.80/311,936.70 = 185,796.20/x
  3. Step 3: Cross multiply
    207,957.80x = 311,936.70 × 185,796.20
  4. Step 4: Simplify right side
    207,957.80x = 57,956,653,500.54
  5. Step 5: Solve for x
    x = 57,956,653,500.54/207,957.80
  6. Step 6: Final answer
    x = 278,694.30

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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.