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Finding the Fourth Proportional to 321,396.83, 482,100.11 and 121,663.59

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Solution

The fourth proportional to 321,396.83, 482,100.11 and 121,663.59 is: 182,497.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,396.83 : 482,100.11 = 121,663.59 : x
  2. Step 2: Convert to fraction form
    321,396.83/482,100.11 = 121,663.59/x
  3. Step 3: Cross multiply
    321,396.83x = 482,100.11 × 121,663.59
  4. Step 4: Simplify right side
    321,396.83x = 58,654,029,513.68
  5. Step 5: Solve for x
    x = 58,654,029,513.68/321,396.83
  6. Step 6: Final answer
    x = 182,497.23

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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.