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Finding the Fourth Proportional to 376,466.61, 519,522.41 and 215,321.43

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Solution

The fourth proportional to 376,466.61, 519,522.41 and 215,321.43 is: 297,142.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,466.61 : 519,522.41 = 215,321.43 : x
  2. Step 2: Convert to fraction form
    376,466.61/519,522.41 = 215,321.43/x
  3. Step 3: Cross multiply
    376,466.61x = 519,522.41 × 215,321.43
  4. Step 4: Simplify right side
    376,466.61x = 111,864,308,776.55
  5. Step 5: Solve for x
    x = 111,864,308,776.55/376,466.61
  6. Step 6: Final answer
    x = 297,142.71

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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.