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Finding the Fourth Proportional to 269,803.60, 404,705.40 and 82,790.80

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Solution

The fourth proportional to 269,803.60, 404,705.40 and 82,790.80 is: 124,186.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,803.60 : 404,705.40 = 82,790.80 : x
  2. Step 2: Convert to fraction form
    269,803.60/404,705.40 = 82,790.80/x
  3. Step 3: Cross multiply
    269,803.60x = 404,705.40 × 82,790.80
  4. Step 4: Simplify right side
    269,803.60x = 33,505,883,830.32
  5. Step 5: Solve for x
    x = 33,505,883,830.32/269,803.60
  6. Step 6: Final answer
    x = 124,186.20

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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.