Home / 445,811.60-668,717.40-196,979.60

Finding the Fourth Proportional to 445,811.60, 668,717.40 and 196,979.60

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Solution

The fourth proportional to 445,811.60, 668,717.40 and 196,979.60 is: 295,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,811.60 : 668,717.40 = 196,979.60 : x
  2. Step 2: Convert to fraction form
    445,811.60/668,717.40 = 196,979.60/x
  3. Step 3: Cross multiply
    445,811.60x = 668,717.40 × 196,979.60
  4. Step 4: Simplify right side
    445,811.60x = 131,723,685,965.04
  5. Step 5: Solve for x
    x = 131,723,685,965.04/445,811.60
  6. Step 6: Final answer
    x = 295,469.40

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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.