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Finding the Fourth Proportional to 207,959.37, 311,939.11 and 58,221.72

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Solution

The fourth proportional to 207,959.37, 311,939.11 and 58,221.72 is: 87,332.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,959.37 : 311,939.11 = 58,221.72 : x
  2. Step 2: Convert to fraction form
    207,959.37/311,939.11 = 58,221.72/x
  3. Step 3: Cross multiply
    207,959.37x = 311,939.11 × 58,221.72
  4. Step 4: Simplify right side
    207,959.37x = 18,161,629,959.77
  5. Step 5: Solve for x
    x = 18,161,629,959.77/207,959.37
  6. Step 6: Final answer
    x = 87,332.59

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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.