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Finding the Fourth Proportional to 321,329.93, 443,418.19 and 185,355.74

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Solution

The fourth proportional to 321,329.93, 443,418.19 and 185,355.74 is: 255,781.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,329.93 : 443,418.19 = 185,355.74 : x
  2. Step 2: Convert to fraction form
    321,329.93/443,418.19 = 185,355.74/x
  3. Step 3: Cross multiply
    321,329.93x = 443,418.19 × 185,355.74
  4. Step 4: Simplify right side
    321,329.93x = 82,190,107,382.07
  5. Step 5: Solve for x
    x = 82,190,107,382.07/321,329.93
  6. Step 6: Final answer
    x = 255,781.06

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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.