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Finding the Fourth Proportional to 445,846.60, 668,850.90 and 146,243.80

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Solution

The fourth proportional to 445,846.60, 668,850.90 and 146,243.80 is: 219,392.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,846.60 : 668,850.90 = 146,243.80 : x
  2. Step 2: Convert to fraction form
    445,846.60/668,850.90 = 146,243.80/x
  3. Step 3: Cross multiply
    445,846.60x = 668,850.90 × 146,243.80
  4. Step 4: Simplify right side
    445,846.60x = 97,815,297,249.42
  5. Step 5: Solve for x
    x = 97,815,297,249.42/445,846.60
  6. Step 6: Final answer
    x = 219,392.27

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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.