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Finding the Fourth Proportional to 445,338.68, 667,656.66 and 220,776.44

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Solution

The fourth proportional to 445,338.68, 667,656.66 and 220,776.44 is: 330,990.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,338.68 : 667,656.66 = 220,776.44 : x
  2. Step 2: Convert to fraction form
    445,338.68/667,656.66 = 220,776.44/x
  3. Step 3: Cross multiply
    445,338.68x = 667,656.66 × 220,776.44
  4. Step 4: Simplify right side
    445,338.68x = 147,402,860,537.09
  5. Step 5: Solve for x
    x = 147,402,860,537.09/445,338.68
  6. Step 6: Final answer
    x = 330,990.47

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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.