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Finding the Fourth Proportional to 321,781.70, 482,031.03 and 251,331.14

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Solution

The fourth proportional to 321,781.70, 482,031.03 and 251,331.14 is: 376,495.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,781.70 : 482,031.03 = 251,331.14 : x
  2. Step 2: Convert to fraction form
    321,781.70/482,031.03 = 251,331.14/x
  3. Step 3: Cross multiply
    321,781.70x = 482,031.03 × 251,331.14
  4. Step 4: Simplify right side
    321,781.70x = 121,149,408,285.27
  5. Step 5: Solve for x
    x = 121,149,408,285.27/321,781.70
  6. Step 6: Final answer
    x = 376,495.64

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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.