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Finding the Fourth Proportional to 373,822.43, 515,857.02 and 212,662.40

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Solution

The fourth proportional to 373,822.43, 515,857.02 and 212,662.40 is: 293,463.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,822.43 : 515,857.02 = 212,662.40 : x
  2. Step 2: Convert to fraction form
    373,822.43/515,857.02 = 212,662.40/x
  3. Step 3: Cross multiply
    373,822.43x = 515,857.02 × 212,662.40
  4. Step 4: Simplify right side
    373,822.43x = 109,703,391,930.05
  5. Step 5: Solve for x
    x = 109,703,391,930.05/373,822.43
  6. Step 6: Final answer
    x = 293,463.91

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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.