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Finding the Fourth Proportional to 436,884.60, 655,414.32 and 137,440.56

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Solution

The fourth proportional to 436,884.60, 655,414.32 and 137,440.56 is: 206,188.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,884.60 : 655,414.32 = 137,440.56 : x
  2. Step 2: Convert to fraction form
    436,884.60/655,414.32 = 137,440.56/x
  3. Step 3: Cross multiply
    436,884.60x = 655,414.32 × 137,440.56
  4. Step 4: Simplify right side
    436,884.60x = 90,080,511,172.82
  5. Step 5: Solve for x
    x = 90,080,511,172.82/436,884.60
  6. Step 6: Final answer
    x = 206,188.34

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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.