Home / 324,741.20-485,799.60-280,855.40

Finding the Fourth Proportional to 324,741.20, 485,799.60 and 280,855.40

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Solution

The fourth proportional to 324,741.20, 485,799.60 and 280,855.40 is: 420,148.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,741.20 : 485,799.60 = 280,855.40 : x
  2. Step 2: Convert to fraction form
    324,741.20/485,799.60 = 280,855.40/x
  3. Step 3: Cross multiply
    324,741.20x = 485,799.60 × 280,855.40
  4. Step 4: Simplify right side
    324,741.20x = 136,439,440,977.84
  5. Step 5: Solve for x
    x = 136,439,440,977.84/324,741.20
  6. Step 6: Final answer
    x = 420,148.23

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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.