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Finding the Fourth Proportional to 442,840.40, 664,260.60 and 162,321.20

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Solution

The fourth proportional to 442,840.40, 664,260.60 and 162,321.20 is: 243,481.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,840.40 : 664,260.60 = 162,321.20 : x
  2. Step 2: Convert to fraction form
    442,840.40/664,260.60 = 162,321.20/x
  3. Step 3: Cross multiply
    442,840.40x = 664,260.60 × 162,321.20
  4. Step 4: Simplify right side
    442,840.40x = 107,823,577,704.72
  5. Step 5: Solve for x
    x = 107,823,577,704.72/442,840.40
  6. Step 6: Final answer
    x = 243,481.80

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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.