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Finding the Fourth Proportional to 207,818.27, 311,850.52 and 87,868.66

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Solution

The fourth proportional to 207,818.27, 311,850.52 and 87,868.66 is: 131,855.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,818.27 : 311,850.52 = 87,868.66 : x
  2. Step 2: Convert to fraction form
    207,818.27/311,850.52 = 87,868.66/x
  3. Step 3: Cross multiply
    207,818.27x = 311,850.52 × 87,868.66
  4. Step 4: Simplify right side
    207,818.27x = 27,401,887,460.23
  5. Step 5: Solve for x
    x = 27,401,887,460.23/207,818.27
  6. Step 6: Final answer
    x = 131,855.05

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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.