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Finding the Fourth Proportional to 239,891.82, 330,931.14 and 143,027.36

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Solution

The fourth proportional to 239,891.82, 330,931.14 and 143,027.36 is: 197,306.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,891.82 : 330,931.14 = 143,027.36 : x
  2. Step 2: Convert to fraction form
    239,891.82/330,931.14 = 143,027.36/x
  3. Step 3: Cross multiply
    239,891.82x = 330,931.14 × 143,027.36
  4. Step 4: Simplify right side
    239,891.82x = 47,332,207,295.99
  5. Step 5: Solve for x
    x = 47,332,207,295.99/239,891.82
  6. Step 6: Final answer
    x = 197,306.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.