Home / 324,739.20-485,796.60-280,853.40

Finding the Fourth Proportional to 324,739.20, 485,796.60 and 280,853.40

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Solution

The fourth proportional to 324,739.20, 485,796.60 and 280,853.40 is: 420,145.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,739.20 : 485,796.60 = 280,853.40 : x
  2. Step 2: Convert to fraction form
    324,739.20/485,796.60 = 280,853.40/x
  3. Step 3: Cross multiply
    324,739.20x = 485,796.60 × 280,853.40
  4. Step 4: Simplify right side
    324,739.20x = 136,437,626,818.44
  5. Step 5: Solve for x
    x = 136,437,626,818.44/324,739.20
  6. Step 6: Final answer
    x = 420,145.23

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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.