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Finding the Fourth Proportional to 490,447.40, 735,671.10 and 253,862.60

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Solution

The fourth proportional to 490,447.40, 735,671.10 and 253,862.60 is: 380,793.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,447.40 : 735,671.10 = 253,862.60 : x
  2. Step 2: Convert to fraction form
    490,447.40/735,671.10 = 253,862.60/x
  3. Step 3: Cross multiply
    490,447.40x = 735,671.10 × 253,862.60
  4. Step 4: Simplify right side
    490,447.40x = 186,759,378,190.86
  5. Step 5: Solve for x
    x = 186,759,378,190.86/490,447.40
  6. Step 6: Final answer
    x = 380,793.90

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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.