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Finding the Fourth Proportional to 325,939.40, 488,909.10 and 307,568.60

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Solution

The fourth proportional to 325,939.40, 488,909.10 and 307,568.60 is: 461,352.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,939.40 : 488,909.10 = 307,568.60 : x
  2. Step 2: Convert to fraction form
    325,939.40/488,909.10 = 307,568.60/x
  3. Step 3: Cross multiply
    325,939.40x = 488,909.10 × 307,568.60
  4. Step 4: Simplify right side
    325,939.40x = 150,373,087,414.26
  5. Step 5: Solve for x
    x = 150,373,087,414.26/325,939.40
  6. Step 6: Final answer
    x = 461,352.90

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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.