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Finding the Fourth Proportional to 321,385.93, 482,134.28 and 131,949.41

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Solution

The fourth proportional to 321,385.93, 482,134.28 and 131,949.41 is: 197,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,385.93 : 482,134.28 = 131,949.41 : x
  2. Step 2: Convert to fraction form
    321,385.93/482,134.28 = 131,949.41/x
  3. Step 3: Cross multiply
    321,385.93x = 482,134.28 × 131,949.41
  4. Step 4: Simplify right side
    321,385.93x = 63,617,330,716.36
  5. Step 5: Solve for x
    x = 63,617,330,716.36/321,385.93
  6. Step 6: Final answer
    x = 197,946.85

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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.