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Finding the Fourth Proportional to 339,998.40, 509,997.60 and 303,256.80

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Solution

The fourth proportional to 339,998.40, 509,997.60 and 303,256.80 is: 454,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,998.40 : 509,997.60 = 303,256.80 : x
  2. Step 2: Convert to fraction form
    339,998.40/509,997.60 = 303,256.80/x
  3. Step 3: Cross multiply
    339,998.40x = 509,997.60 × 303,256.80
  4. Step 4: Simplify right side
    339,998.40x = 154,660,240,183.68
  5. Step 5: Solve for x
    x = 154,660,240,183.68/339,998.40
  6. Step 6: Final answer
    x = 454,885.20

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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.