Home / 414,237.31-621,363.69-129,921.57

Finding the Fourth Proportional to 414,237.31, 621,363.69 and 129,921.57

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Solution

The fourth proportional to 414,237.31, 621,363.69 and 129,921.57 is: 194,884.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,237.31 : 621,363.69 = 129,921.57 : x
  2. Step 2: Convert to fraction form
    414,237.31/621,363.69 = 129,921.57/x
  3. Step 3: Cross multiply
    414,237.31x = 621,363.69 × 129,921.57
  4. Step 4: Simplify right side
    414,237.31x = 80,728,546,145.79
  5. Step 5: Solve for x
    x = 80,728,546,145.79/414,237.31
  6. Step 6: Final answer
    x = 194,884.78

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1.5x scale

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.