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Finding the Fourth Proportional to 445,991.27, 668,992.37 and 130,454.55

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Solution

The fourth proportional to 445,991.27, 668,992.37 and 130,454.55 is: 195,683.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,991.27 : 668,992.37 = 130,454.55 : x
  2. Step 2: Convert to fraction form
    445,991.27/668,992.37 = 130,454.55/x
  3. Step 3: Cross multiply
    445,991.27x = 668,992.37 × 130,454.55
  4. Step 4: Simplify right side
    445,991.27x = 87,273,097,929.51
  5. Step 5: Solve for x
    x = 87,273,097,929.51/445,991.27
  6. Step 6: Final answer
    x = 195,683.42

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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.