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Finding the Fourth Proportional to 373,530.82, 515,496.89 and 212,400.86

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Solution

The fourth proportional to 373,530.82, 515,496.89 and 212,400.86 is: 293,127.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,530.82 : 515,496.89 = 212,400.86 : x
  2. Step 2: Convert to fraction form
    373,530.82/515,496.89 = 212,400.86/x
  3. Step 3: Cross multiply
    373,530.82x = 515,496.89 × 212,400.86
  4. Step 4: Simplify right side
    373,530.82x = 109,491,982,763.33
  5. Step 5: Solve for x
    x = 109,491,982,763.33/373,530.82
  6. Step 6: Final answer
    x = 293,127.04

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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.