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Finding the Fourth Proportional to 445,638.38, 614,981.97 and 254,651.31

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Solution

The fourth proportional to 445,638.38, 614,981.97 and 254,651.31 is: 351,419.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,638.38 : 614,981.97 = 254,651.31 : x
  2. Step 2: Convert to fraction form
    445,638.38/614,981.97 = 254,651.31/x
  3. Step 3: Cross multiply
    445,638.38x = 614,981.97 × 254,651.31
  4. Step 4: Simplify right side
    445,638.38x = 156,605,964,286.88
  5. Step 5: Solve for x
    x = 156,605,964,286.88/445,638.38
  6. Step 6: Final answer
    x = 351,419.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.