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Finding the Fourth Proportional to 403,775.80, 605,517.90 and 204,029.80

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Solution

The fourth proportional to 403,775.80, 605,517.90 and 204,029.80 is: 305,971.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,775.80 : 605,517.90 = 204,029.80 : x
  2. Step 2: Convert to fraction form
    403,775.80/605,517.90 = 204,029.80/x
  3. Step 3: Cross multiply
    403,775.80x = 605,517.90 × 204,029.80
  4. Step 4: Simplify right side
    403,775.80x = 123,543,696,033.42
  5. Step 5: Solve for x
    x = 123,543,696,033.42/403,775.80
  6. Step 6: Final answer
    x = 305,971.03

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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.