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Finding the Fourth Proportional to 321,549.90, 482,393.97 and 108,339

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Solution

The fourth proportional to 321,549.90, 482,393.97 and 108,339 is: 162,531.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,549.90 : 482,393.97 = 108,339 : x
  2. Step 2: Convert to fraction form
    321,549.90/482,393.97 = 108,339/x
  3. Step 3: Cross multiply
    321,549.90x = 482,393.97 × 108,339
  4. Step 4: Simplify right side
    321,549.90x = 52,262,080,315.83
  5. Step 5: Solve for x
    x = 52,262,080,315.83/321,549.90
  6. Step 6: Final answer
    x = 162,531.79

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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.