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Finding the Fourth Proportional to 445,108.73, 667,690.23 and 145,620.95

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Solution

The fourth proportional to 445,108.73, 667,690.23 and 145,620.95 is: 218,440.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,108.73 : 667,690.23 = 145,620.95 : x
  2. Step 2: Convert to fraction form
    445,108.73/667,690.23 = 145,620.95/x
  3. Step 3: Cross multiply
    445,108.73x = 667,690.23 × 145,620.95
  4. Step 4: Simplify right side
    445,108.73x = 97,229,685,598.32
  5. Step 5: Solve for x
    x = 97,229,685,598.32/445,108.73
  6. Step 6: Final answer
    x = 218,440.30

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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.