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Finding the Fourth Proportional to 376,453.54, 519,357.71 and 215,221.96

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Solution

The fourth proportional to 376,453.54, 519,357.71 and 215,221.96 is: 296,921.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,453.54 : 519,357.71 = 215,221.96 : x
  2. Step 2: Convert to fraction form
    376,453.54/519,357.71 = 215,221.96/x
  3. Step 3: Cross multiply
    376,453.54x = 519,357.71 × 215,221.96
  4. Step 4: Simplify right side
    376,453.54x = 111,777,184,287.31
  5. Step 5: Solve for x
    x = 111,777,184,287.31/376,453.54
  6. Step 6: Final answer
    x = 296,921.59

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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.