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Finding the Fourth Proportional to 343,996.20, 515,216.70 and 204,028.20

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Solution

The fourth proportional to 343,996.20, 515,216.70 and 204,028.20 is: 305,581.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,996.20 : 515,216.70 = 204,028.20 : x
  2. Step 2: Convert to fraction form
    343,996.20/515,216.70 = 204,028.20/x
  3. Step 3: Cross multiply
    343,996.20x = 515,216.70 × 204,028.20
  4. Step 4: Simplify right side
    343,996.20x = 105,118,735,910.94
  5. Step 5: Solve for x
    x = 105,118,735,910.94/343,996.20
  6. Step 6: Final answer
    x = 305,581.10

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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.