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Finding the Fourth Proportional to 403,326.60, 605,363.96 and 203,787.11

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Solution

The fourth proportional to 403,326.60, 605,363.96 and 203,787.11 is: 305,869.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,326.60 : 605,363.96 = 203,787.11 : x
  2. Step 2: Convert to fraction form
    403,326.60/605,363.96 = 203,787.11/x
  3. Step 3: Cross multiply
    403,326.60x = 605,363.96 × 203,787.11
  4. Step 4: Simplify right side
    403,326.60x = 123,365,367,860.80
  5. Step 5: Solve for x
    x = 123,365,367,860.80/403,326.60
  6. Step 6: Final answer
    x = 305,869.66

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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.