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Finding the Fourth Proportional to 207,488.55, 311,232.83 and 188,789.70

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Solution

The fourth proportional to 207,488.55, 311,232.83 and 188,789.70 is: 283,184.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,488.55 : 311,232.83 = 188,789.70 : x
  2. Step 2: Convert to fraction form
    207,488.55/311,232.83 = 188,789.70/x
  3. Step 3: Cross multiply
    207,488.55x = 311,232.83 × 188,789.70
  4. Step 4: Simplify right side
    207,488.55x = 58,757,551,661.90
  5. Step 5: Solve for x
    x = 58,757,551,661.90/207,488.55
  6. Step 6: Final answer
    x = 283,184.55

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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.