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Finding the Fourth Proportional to 445,975.97, 668,958.14 and 109,019.60

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Solution

The fourth proportional to 445,975.97, 668,958.14 and 109,019.60 is: 163,527.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,975.97 : 668,958.14 = 109,019.60 : x
  2. Step 2: Convert to fraction form
    445,975.97/668,958.14 = 109,019.60/x
  3. Step 3: Cross multiply
    445,975.97x = 668,958.14 × 109,019.60
  4. Step 4: Simplify right side
    445,975.97x = 72,929,545,767.30
  5. Step 5: Solve for x
    x = 72,929,545,767.30/445,975.97
  6. Step 6: Final answer
    x = 163,527.97

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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.