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Finding the Fourth Proportional to 368,144.70, 551,439.45 and 305,936.70

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Solution

The fourth proportional to 368,144.70, 551,439.45 and 305,936.70 is: 458,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,144.70 : 551,439.45 = 305,936.70 : x
  2. Step 2: Convert to fraction form
    368,144.70/551,439.45 = 305,936.70/x
  3. Step 3: Cross multiply
    368,144.70x = 551,439.45 × 305,936.70
  4. Step 4: Simplify right side
    368,144.70x = 168,705,565,582.82
  5. Step 5: Solve for x
    x = 168,705,565,582.82/368,144.70
  6. Step 6: Final answer
    x = 458,258.85

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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.