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Finding the Fourth Proportional to 376,324.52, 519,327.59 and 212,978.05

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Solution

The fourth proportional to 376,324.52, 519,327.59 and 212,978.05 is: 293,909.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,324.52 : 519,327.59 = 212,978.05 : x
  2. Step 2: Convert to fraction form
    376,324.52/519,327.59 = 212,978.05/x
  3. Step 3: Cross multiply
    376,324.52x = 519,327.59 × 212,978.05
  4. Step 4: Simplify right side
    376,324.52x = 110,605,375,066.19
  5. Step 5: Solve for x
    x = 110,605,375,066.19/376,324.52
  6. Step 6: Final answer
    x = 293,909.57

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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.