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Finding the Fourth Proportional to 488,268.40, 731,236.20 and 299,311.60

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Solution

The fourth proportional to 488,268.40, 731,236.20 and 299,311.60 is: 448,252.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,268.40 : 731,236.20 = 299,311.60 : x
  2. Step 2: Convert to fraction form
    488,268.40/731,236.20 = 299,311.60/x
  3. Step 3: Cross multiply
    488,268.40x = 731,236.20 × 299,311.60
  4. Step 4: Simplify right side
    488,268.40x = 218,867,476,999.92
  5. Step 5: Solve for x
    x = 218,867,476,999.92/488,268.40
  6. Step 6: Final answer
    x = 448,252.39

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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.