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Finding the Fourth Proportional to 326,856.43, 450,932.17 and 189,009.88

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Solution

The fourth proportional to 326,856.43, 450,932.17 and 189,009.88 is: 260,758.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,856.43 : 450,932.17 = 189,009.88 : x
  2. Step 2: Convert to fraction form
    326,856.43/450,932.17 = 189,009.88/x
  3. Step 3: Cross multiply
    326,856.43x = 450,932.17 × 189,009.88
  4. Step 4: Simplify right side
    326,856.43x = 85,230,635,339.84
  5. Step 5: Solve for x
    x = 85,230,635,339.84/326,856.43
  6. Step 6: Final answer
    x = 260,758.63

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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.