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Finding the Fourth Proportional to 403,415.53, 605,188.97 and 119,134.83

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Solution

The fourth proportional to 403,415.53, 605,188.97 and 119,134.83 is: 178,721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,415.53 : 605,188.97 = 119,134.83 : x
  2. Step 2: Convert to fraction form
    403,415.53/605,188.97 = 119,134.83/x
  3. Step 3: Cross multiply
    403,415.53x = 605,188.97 × 119,134.83
  4. Step 4: Simplify right side
    403,415.53x = 72,099,084,463.15
  5. Step 5: Solve for x
    x = 72,099,084,463.15/403,415.53
  6. Step 6: Final answer
    x = 178,721.64

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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.