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Finding the Fourth Proportional to 325,771.40, 488,640.90 and 168,015.80

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Solution

The fourth proportional to 325,771.40, 488,640.90 and 168,015.80 is: 252,015.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,771.40 : 488,640.90 = 168,015.80 : x
  2. Step 2: Convert to fraction form
    325,771.40/488,640.90 = 168,015.80/x
  3. Step 3: Cross multiply
    325,771.40x = 488,640.90 × 168,015.80
  4. Step 4: Simplify right side
    325,771.40x = 82,099,391,726.22
  5. Step 5: Solve for x
    x = 82,099,391,726.22/325,771.40
  6. Step 6: Final answer
    x = 252,015.34

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1.5x scale

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.