Home / 414,318.40-621,805.65-161,719.90

Finding the Fourth Proportional to 414,318.40, 621,805.65 and 161,719.90

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Solution

The fourth proportional to 414,318.40, 621,805.65 and 161,719.90 is: 242,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,318.40 : 621,805.65 = 161,719.90 : x
  2. Step 2: Convert to fraction form
    414,318.40/621,805.65 = 161,719.90/x
  3. Step 3: Cross multiply
    414,318.40x = 621,805.65 × 161,719.90
  4. Step 4: Simplify right side
    414,318.40x = 100,558,347,537.44
  5. Step 5: Solve for x
    x = 100,558,347,537.44/414,318.40
  6. Step 6: Final answer
    x = 242,707.90

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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.