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Finding the Fourth Proportional to 481,338.50, 664,221.85 and 263,505.40

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Solution

The fourth proportional to 481,338.50, 664,221.85 and 263,505.40 is: 363,623.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,338.50 : 664,221.85 = 263,505.40 : x
  2. Step 2: Convert to fraction form
    481,338.50/664,221.85 = 263,505.40/x
  3. Step 3: Cross multiply
    481,338.50x = 664,221.85 × 263,505.40
  4. Step 4: Simplify right side
    481,338.50x = 175,026,047,172.14
  5. Step 5: Solve for x
    x = 175,026,047,172.14/481,338.50
  6. Step 6: Final answer
    x = 363,623.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.