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Finding the Fourth Proportional to 144,859.76, 217,289.82 and 39,679.64

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Solution

The fourth proportional to 144,859.76, 217,289.82 and 39,679.64 is: 59,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,859.76 : 217,289.82 = 39,679.64 : x
  2. Step 2: Convert to fraction form
    144,859.76/217,289.82 = 39,679.64/x
  3. Step 3: Cross multiply
    144,859.76x = 217,289.82 × 39,679.64
  4. Step 4: Simplify right side
    144,859.76x = 8,621,981,833.26
  5. Step 5: Solve for x
    x = 8,621,981,833.26/144,859.76
  6. Step 6: Final answer
    x = 59,519.51

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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.