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Finding the Fourth Proportional to 367,621.20, 551,431.80 and 146,005.20

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Solution

The fourth proportional to 367,621.20, 551,431.80 and 146,005.20 is: 219,007.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,621.20 : 551,431.80 = 146,005.20 : x
  2. Step 2: Convert to fraction form
    367,621.20/551,431.80 = 146,005.20/x
  3. Step 3: Cross multiply
    367,621.20x = 551,431.80 × 146,005.20
  4. Step 4: Simplify right side
    367,621.20x = 80,511,910,245.36
  5. Step 5: Solve for x
    x = 80,511,910,245.36/367,621.20
  6. Step 6: Final answer
    x = 219,007.80

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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.