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Finding the Fourth Proportional to 444,005.90, 665,243.40 and 206,862.20

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Solution

The fourth proportional to 444,005.90, 665,243.40 and 206,862.20 is: 309,936.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    444,005.90 : 665,243.40 = 206,862.20 : x
  2. Step 2: Convert to fraction form
    444,005.90/665,243.40 = 206,862.20/x
  3. Step 3: Cross multiply
    444,005.90x = 665,243.40 × 206,862.20
  4. Step 4: Simplify right side
    444,005.90x = 137,613,713,259.48
  5. Step 5: Solve for x
    x = 137,613,713,259.48/444,005.90
  6. Step 6: Final answer
    x = 309,936.68

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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.