Home / 279,986,405.40-419,979,608.10-221,535,768.60

Finding the Fourth Proportional to 279,986,405.40, 419,979,608.10 and 221,535,768.60

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Solution

The fourth proportional to 279,986,405.40, 419,979,608.10 and 221,535,768.60 is: 332,303,652.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,986,405.40 : 419,979,608.10 = 221,535,768.60 : x
  2. Step 2: Convert to fraction form
    279,986,405.40/419,979,608.10 = 221,535,768.60/x
  3. Step 3: Cross multiply
    279,986,405.40x = 419,979,608.10 × 221,535,768.60
  4. Step 4: Simplify right side
    279,986,405.40x = 93,040,505,276,760,288
  5. Step 5: Solve for x
    x = 93,040,505,276,760,288/279,986,405.40
  6. Step 6: Final answer
    x = 332,303,652.90

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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.