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Finding the Fourth Proportional to 445,074, 667,716 and 145,553.40

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Solution

The fourth proportional to 445,074, 667,716 and 145,553.40 is: 218,364.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,074 : 667,716 = 145,553.40 : x
  2. Step 2: Convert to fraction form
    445,074/667,716 = 145,553.40/x
  3. Step 3: Cross multiply
    445,074x = 667,716 × 145,553.40
  4. Step 4: Simplify right side
    445,074x = 97,188,334,034.40
  5. Step 5: Solve for x
    x = 97,188,334,034.40/445,074
  6. Step 6: Final answer
    x = 218,364.44

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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.