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Finding the Fourth Proportional to 408,321.79, 612,480.62 and 104,714.60

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Solution

The fourth proportional to 408,321.79, 612,480.62 and 104,714.60 is: 157,071.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,321.79 : 612,480.62 = 104,714.60 : x
  2. Step 2: Convert to fraction form
    408,321.79/612,480.62 = 104,714.60/x
  3. Step 3: Cross multiply
    408,321.79x = 612,480.62 × 104,714.60
  4. Step 4: Simplify right side
    408,321.79x = 64,135,660,330.44
  5. Step 5: Solve for x
    x = 64,135,660,330.44/408,321.79
  6. Step 6: Final answer
    x = 157,071.36

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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.