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Finding the Fourth Proportional to 445,995.27, 668,998.37 and 130,458.55

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Solution

The fourth proportional to 445,995.27, 668,998.37 and 130,458.55 is: 195,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,995.27 : 668,998.37 = 130,458.55 : x
  2. Step 2: Convert to fraction form
    445,995.27/668,998.37 = 130,458.55/x
  3. Step 3: Cross multiply
    445,995.27x = 668,998.37 × 130,458.55
  4. Step 4: Simplify right side
    445,995.27x = 87,276,557,302.56
  5. Step 5: Solve for x
    x = 87,276,557,302.56/445,995.27
  6. Step 6: Final answer
    x = 195,689.42

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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.