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Finding the Fourth Proportional to 231,399.87, 347,064.73 and 79,620.03

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Solution

The fourth proportional to 231,399.87, 347,064.73 and 79,620.03 is: 119,417.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,399.87 : 347,064.73 = 79,620.03 : x
  2. Step 2: Convert to fraction form
    231,399.87/347,064.73 = 79,620.03/x
  3. Step 3: Cross multiply
    231,399.87x = 347,064.73 × 79,620.03
  4. Step 4: Simplify right side
    231,399.87x = 27,633,304,214.54
  5. Step 5: Solve for x
    x = 27,633,304,214.54/231,399.87
  6. Step 6: Final answer
    x = 119,417.98

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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.