Home / 257,469.40-386,204.10-131,498.20

Finding the Fourth Proportional to 257,469.40, 386,204.10 and 131,498.20

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Solution

The fourth proportional to 257,469.40, 386,204.10 and 131,498.20 is: 197,247.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,469.40 : 386,204.10 = 131,498.20 : x
  2. Step 2: Convert to fraction form
    257,469.40/386,204.10 = 131,498.20/x
  3. Step 3: Cross multiply
    257,469.40x = 386,204.10 × 131,498.20
  4. Step 4: Simplify right side
    257,469.40x = 50,785,143,982.62
  5. Step 5: Solve for x
    x = 50,785,143,982.62/257,469.40
  6. Step 6: Final answer
    x = 197,247.30

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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.