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Finding the Fourth Proportional to 442,845.78, 664,374.08 and 143,326.37

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Solution

The fourth proportional to 442,845.78, 664,374.08 and 143,326.37 is: 215,023.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,845.78 : 664,374.08 = 143,326.37 : x
  2. Step 2: Convert to fraction form
    442,845.78/664,374.08 = 143,326.37/x
  3. Step 3: Cross multiply
    442,845.78x = 664,374.08 × 143,326.37
  4. Step 4: Simplify right side
    442,845.78x = 95,222,321,169.99
  5. Step 5: Solve for x
    x = 95,222,321,169.99/442,845.78
  6. Step 6: Final answer
    x = 215,023.66

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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.