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Finding the Fourth Proportional to 373,383.15, 515,299.37 and 212,288.73

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Solution

The fourth proportional to 373,383.15, 515,299.37 and 212,288.73 is: 292,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,383.15 : 515,299.37 = 212,288.73 : x
  2. Step 2: Convert to fraction form
    373,383.15/515,299.37 = 212,288.73/x
  3. Step 3: Cross multiply
    373,383.15x = 515,299.37 × 212,288.73
  4. Step 4: Simplify right side
    373,383.15x = 109,392,247,765.66
  5. Step 5: Solve for x
    x = 109,392,247,765.66/373,383.15
  6. Step 6: Final answer
    x = 292,975.86

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1.5x scale

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.