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Finding the Fourth Proportional to 231,806.79, 347,760.14 and 71,879.51

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Solution

The fourth proportional to 231,806.79, 347,760.14 and 71,879.51 is: 107,834.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,806.79 : 347,760.14 = 71,879.51 : x
  2. Step 2: Convert to fraction form
    231,806.79/347,760.14 = 71,879.51/x
  3. Step 3: Cross multiply
    231,806.79x = 347,760.14 × 71,879.51
  4. Step 4: Simplify right side
    231,806.79x = 24,996,828,460.73
  5. Step 5: Solve for x
    x = 24,996,828,460.73/231,806.79
  6. Step 6: Final answer
    x = 107,834.76

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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.