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Finding the Fourth Proportional to 368,131.20, 551,419.20 and 305,923.20

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Solution

The fourth proportional to 368,131.20, 551,419.20 and 305,923.20 is: 458,238.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,131.20 : 551,419.20 = 305,923.20 : x
  2. Step 2: Convert to fraction form
    368,131.20/551,419.20 = 305,923.20/x
  3. Step 3: Cross multiply
    368,131.20x = 551,419.20 × 305,923.20
  4. Step 4: Simplify right side
    368,131.20x = 168,691,926,205.44
  5. Step 5: Solve for x
    x = 168,691,926,205.44/368,131.20
  6. Step 6: Final answer
    x = 458,238.60

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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.