Home / 414,491.20-621,736.80-114,971.20

Finding the Fourth Proportional to 414,491.20, 621,736.80 and 114,971.20

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Solution

The fourth proportional to 414,491.20, 621,736.80 and 114,971.20 is: 172,456.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,491.20 : 621,736.80 = 114,971.20 : x
  2. Step 2: Convert to fraction form
    414,491.20/621,736.80 = 114,971.20/x
  3. Step 3: Cross multiply
    414,491.20x = 621,736.80 × 114,971.20
  4. Step 4: Simplify right side
    414,491.20x = 71,481,825,980.16
  5. Step 5: Solve for x
    x = 71,481,825,980.16/414,491.20
  6. Step 6: Final answer
    x = 172,456.80

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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.