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Finding the Fourth Proportional to 343,399.60, 515,099.40 and 231,425.20

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Solution

The fourth proportional to 343,399.60, 515,099.40 and 231,425.20 is: 347,137.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,399.60 : 515,099.40 = 231,425.20 : x
  2. Step 2: Convert to fraction form
    343,399.60/515,099.40 = 231,425.20/x
  3. Step 3: Cross multiply
    343,399.60x = 515,099.40 × 231,425.20
  4. Step 4: Simplify right side
    343,399.60x = 119,206,981,664.88
  5. Step 5: Solve for x
    x = 119,206,981,664.88/343,399.60
  6. Step 6: Final answer
    x = 347,137.80

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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.