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Finding the Fourth Proportional to 481,995.25, 664,876.42 and 300,620.05

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Solution

The fourth proportional to 481,995.25, 664,876.42 and 300,620.05 is: 414,682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,995.25 : 664,876.42 = 300,620.05 : x
  2. Step 2: Convert to fraction form
    481,995.25/664,876.42 = 300,620.05/x
  3. Step 3: Cross multiply
    481,995.25x = 664,876.42 × 300,620.05
  4. Step 4: Simplify right side
    481,995.25x = 199,875,182,624.22
  5. Step 5: Solve for x
    x = 199,875,182,624.22/481,995.25
  6. Step 6: Final answer
    x = 414,682.89

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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.