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Finding the Fourth Proportional to 269,803.10, 404,704.65 and 82,790.30

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Solution

The fourth proportional to 269,803.10, 404,704.65 and 82,790.30 is: 124,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,803.10 : 404,704.65 = 82,790.30 : x
  2. Step 2: Convert to fraction form
    269,803.10/404,704.65 = 82,790.30/x
  3. Step 3: Cross multiply
    269,803.10x = 404,704.65 × 82,790.30
  4. Step 4: Simplify right side
    269,803.10x = 33,505,619,384.90
  5. Step 5: Solve for x
    x = 33,505,619,384.90/269,803.10
  6. Step 6: Final answer
    x = 124,185.45

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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.