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Finding the Fourth Proportional to 399,974.81, 599,994.14 and 133,736.72

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Solution

The fourth proportional to 399,974.81, 599,994.14 and 133,736.72 is: 200,615.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,974.81 : 599,994.14 = 133,736.72 : x
  2. Step 2: Convert to fraction form
    399,974.81/599,994.14 = 133,736.72/x
  3. Step 3: Cross multiply
    399,974.81x = 599,994.14 × 133,736.72
  4. Step 4: Simplify right side
    399,974.81x = 80,241,244,634.17
  5. Step 5: Solve for x
    x = 80,241,244,634.17/399,974.81
  6. Step 6: Final answer
    x = 200,615.75

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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.