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Finding the Fourth Proportional to 445,437.96, 667,839.62 and 208,651.47

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Solution

The fourth proportional to 445,437.96, 667,839.62 and 208,651.47 is: 312,828.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,437.96 : 667,839.62 = 208,651.47 : x
  2. Step 2: Convert to fraction form
    445,437.96/667,839.62 = 208,651.47/x
  3. Step 3: Cross multiply
    445,437.96x = 667,839.62 × 208,651.47
  4. Step 4: Simplify right side
    445,437.96x = 139,345,714,054.79
  5. Step 5: Solve for x
    x = 139,345,714,054.79/445,437.96
  6. Step 6: Final answer
    x = 312,828.56

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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.