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Finding the Fourth Proportional to 445,992.27, 668,993.87 and 130,455.55

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Solution

The fourth proportional to 445,992.27, 668,993.87 and 130,455.55 is: 195,684.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,992.27 : 668,993.87 = 130,455.55 : x
  2. Step 2: Convert to fraction form
    445,992.27/668,993.87 = 130,455.55/x
  3. Step 3: Cross multiply
    445,992.27x = 668,993.87 × 130,455.55
  4. Step 4: Simplify right side
    445,992.27x = 87,273,963,257.48
  5. Step 5: Solve for x
    x = 87,273,963,257.48/445,992.27
  6. Step 6: Final answer
    x = 195,684.92

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1.5x scale

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.