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Finding the Fourth Proportional to 331,978.40, 497,373.60 and 201,910.40

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Solution

The fourth proportional to 331,978.40, 497,373.60 and 201,910.40 is: 302,504.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,978.40 : 497,373.60 = 201,910.40 : x
  2. Step 2: Convert to fraction form
    331,978.40/497,373.60 = 201,910.40/x
  3. Step 3: Cross multiply
    331,978.40x = 497,373.60 × 201,910.40
  4. Step 4: Simplify right side
    331,978.40x = 100,424,902,525.44
  5. Step 5: Solve for x
    x = 100,424,902,525.44/331,978.40
  6. Step 6: Final answer
    x = 302,504.33

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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.