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Finding the Fourth Proportional to 300,749.30, 415,018.14 and 171,682.65

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Solution

The fourth proportional to 300,749.30, 415,018.14 and 171,682.65 is: 236,912.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,749.30 : 415,018.14 = 171,682.65 : x
  2. Step 2: Convert to fraction form
    300,749.30/415,018.14 = 171,682.65/x
  3. Step 3: Cross multiply
    300,749.30x = 415,018.14 × 171,682.65
  4. Step 4: Simplify right side
    300,749.30x = 71,251,413,214.86
  5. Step 5: Solve for x
    x = 71,251,413,214.86/300,749.30
  6. Step 6: Final answer
    x = 236,912.98

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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.