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Finding the Fourth Proportional to 445,494.27, 668,187.12 and 129,951.48

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Solution

The fourth proportional to 445,494.27, 668,187.12 and 129,951.48 is: 194,911.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,494.27 : 668,187.12 = 129,951.48 : x
  2. Step 2: Convert to fraction form
    445,494.27/668,187.12 = 129,951.48/x
  3. Step 3: Cross multiply
    445,494.27x = 668,187.12 × 129,951.48
  4. Step 4: Simplify right side
    445,494.27x = 86,831,905,160.94
  5. Step 5: Solve for x
    x = 86,831,905,160.94/445,494.27
  6. Step 6: Final answer
    x = 194,911.38

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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.