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Finding the Fourth Proportional to 666,067.30, 999,113.11 and 216,786.42

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Solution

The fourth proportional to 666,067.30, 999,113.11 and 216,786.42 is: 325,183.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,067.30 : 999,113.11 = 216,786.42 : x
  2. Step 2: Convert to fraction form
    666,067.30/999,113.11 = 216,786.42/x
  3. Step 3: Cross multiply
    666,067.30x = 999,113.11 × 216,786.42
  4. Step 4: Simplify right side
    666,067.30x = 216,594,153,750.00
  5. Step 5: Solve for x
    x = 216,594,153,750.00/666,067.30
  6. Step 6: Final answer
    x = 325,183.59

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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.