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Finding the Fourth Proportional to 403,363.53, 605,177.78 and 203,589.45

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Solution

The fourth proportional to 403,363.53, 605,177.78 and 203,589.45 is: 305,451.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,363.53 : 605,177.78 = 203,589.45 : x
  2. Step 2: Convert to fraction form
    403,363.53/605,177.78 = 203,589.45/x
  3. Step 3: Cross multiply
    403,363.53x = 605,177.78 × 203,589.45
  4. Step 4: Simplify right side
    403,363.53x = 123,207,810,364.47
  5. Step 5: Solve for x
    x = 123,207,810,364.47/403,363.53
  6. Step 6: Final answer
    x = 305,451.04

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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.