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Finding the Fourth Proportional to 207,434, 311,252.60 and 74,324.52

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Solution

The fourth proportional to 207,434, 311,252.60 and 74,324.52 is: 111,523.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,434 : 311,252.60 = 74,324.52 : x
  2. Step 2: Convert to fraction form
    207,434/311,252.60 = 74,324.52/x
  3. Step 3: Cross multiply
    207,434x = 311,252.60 × 74,324.52
  4. Step 4: Simplify right side
    207,434x = 23,133,700,093.75
  5. Step 5: Solve for x
    x = 23,133,700,093.75/207,434
  6. Step 6: Final answer
    x = 111,523.18

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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.