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Finding the Fourth Proportional to 403,327.35, 605,365.08 and 203,787.86

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Solution

The fourth proportional to 403,327.35, 605,365.08 and 203,787.86 is: 305,870.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,327.35 : 605,365.08 = 203,787.86 : x
  2. Step 2: Convert to fraction form
    403,327.35/605,365.08 = 203,787.86/x
  3. Step 3: Cross multiply
    403,327.35x = 605,365.08 × 203,787.86
  4. Step 4: Simplify right side
    403,327.35x = 123,366,051,145.10
  5. Step 5: Solve for x
    x = 123,366,051,145.10/403,327.35
  6. Step 6: Final answer
    x = 305,870.78

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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.