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Finding the Fourth Proportional to 321,437.97, 482,109.57 and 84,797.28

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Solution

The fourth proportional to 321,437.97, 482,109.57 and 84,797.28 is: 127,183.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,437.97 : 482,109.57 = 84,797.28 : x
  2. Step 2: Convert to fraction form
    321,437.97/482,109.57 = 84,797.28/x
  3. Step 3: Cross multiply
    321,437.97x = 482,109.57 × 84,797.28
  4. Step 4: Simplify right side
    321,437.97x = 40,881,580,197.97
  5. Step 5: Solve for x
    x = 40,881,580,197.97/321,437.97
  6. Step 6: Final answer
    x = 127,183.42

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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.