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Finding the Fourth Proportional to 322,335.97, 483,503.43 and 85,678.65

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Solution

The fourth proportional to 322,335.97, 483,503.43 and 85,678.65 is: 128,517.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,335.97 : 483,503.43 = 85,678.65 : x
  2. Step 2: Convert to fraction form
    322,335.97/483,503.43 = 85,678.65/x
  3. Step 3: Cross multiply
    322,335.97x = 483,503.43 × 85,678.65
  4. Step 4: Simplify right side
    322,335.97x = 41,425,922,805.26
  5. Step 5: Solve for x
    x = 41,425,922,805.26/322,335.97
  6. Step 6: Final answer
    x = 128,517.84

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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.