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Finding the Fourth Proportional to 403,900.35, 606,342.60 and 204,117.90

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Solution

The fourth proportional to 403,900.35, 606,342.60 and 204,117.90 is: 306,425.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,900.35 : 606,342.60 = 204,117.90 : x
  2. Step 2: Convert to fraction form
    403,900.35/606,342.60 = 204,117.90/x
  3. Step 3: Cross multiply
    403,900.35x = 606,342.60 × 204,117.90
  4. Step 4: Simplify right side
    403,900.35x = 123,765,378,192.54
  5. Step 5: Solve for x
    x = 123,765,378,192.54/403,900.35
  6. Step 6: Final answer
    x = 306,425.53

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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.