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Finding the Fourth Proportional to 445,433, 668,188.44 and 113,009

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Solution

The fourth proportional to 445,433, 668,188.44 and 113,009 is: 169,523.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,433 : 668,188.44 = 113,009 : x
  2. Step 2: Convert to fraction form
    445,433/668,188.44 = 113,009/x
  3. Step 3: Cross multiply
    445,433x = 668,188.44 × 113,009
  4. Step 4: Simplify right side
    445,433x = 75,511,307,415.96
  5. Step 5: Solve for x
    x = 75,511,307,415.96/445,433
  6. Step 6: Final answer
    x = 169,523.38

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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.