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Finding the Fourth Proportional to 326,843.66, 490,036.79 and 166,969.10

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Solution

The fourth proportional to 326,843.66, 490,036.79 and 166,969.10 is: 250,336.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,843.66 : 490,036.79 = 166,969.10 : x
  2. Step 2: Convert to fraction form
    326,843.66/490,036.79 = 166,969.10/x
  3. Step 3: Cross multiply
    326,843.66x = 490,036.79 × 166,969.10
  4. Step 4: Simplify right side
    326,843.66x = 81,820,999,760.43
  5. Step 5: Solve for x
    x = 81,820,999,760.43/326,843.66
  6. Step 6: Final answer
    x = 250,336.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.