Home / 414,228.25-621,349.94-129,912.45

Finding the Fourth Proportional to 414,228.25, 621,349.94 and 129,912.45

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Solution

The fourth proportional to 414,228.25, 621,349.94 and 129,912.45 is: 194,871.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,228.25 : 621,349.94 = 129,912.45 : x
  2. Step 2: Convert to fraction form
    414,228.25/621,349.94 = 129,912.45/x
  3. Step 3: Cross multiply
    414,228.25x = 621,349.94 × 129,912.45
  4. Step 4: Simplify right side
    414,228.25x = 80,721,093,012.75
  5. Step 5: Solve for x
    x = 80,721,093,012.75/414,228.25
  6. Step 6: Final answer
    x = 194,871.05

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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.