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Finding the Fourth Proportional to 207,427.98, 311,243.58 and 74,318.52

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Solution

The fourth proportional to 207,427.98, 311,243.58 and 74,318.52 is: 111,514.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,427.98 : 311,243.58 = 74,318.52 : x
  2. Step 2: Convert to fraction form
    207,427.98/311,243.58 = 74,318.52/x
  3. Step 3: Cross multiply
    207,427.98x = 311,243.58 × 74,318.52
  4. Step 4: Simplify right side
    207,427.98x = 23,131,162,225.10
  5. Step 5: Solve for x
    x = 23,131,162,225.10/207,427.98
  6. Step 6: Final answer
    x = 111,514.19

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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.