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Finding the Fourth Proportional to 207,553.80, 311,330.70 and 188,854.95

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Solution

The fourth proportional to 207,553.80, 311,330.70 and 188,854.95 is: 283,282.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,553.80 : 311,330.70 = 188,854.95 : x
  2. Step 2: Convert to fraction form
    207,553.80/311,330.70 = 188,854.95/x
  3. Step 3: Cross multiply
    207,553.80x = 311,330.70 × 188,854.95
  4. Step 4: Simplify right side
    207,553.80x = 58,796,343,781.97
  5. Step 5: Solve for x
    x = 58,796,343,781.97/207,553.80
  6. Step 6: Final answer
    x = 283,282.43

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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.