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Finding the Fourth Proportional to 442,845.52, 664,379.54 and 127,303

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Solution

The fourth proportional to 442,845.52, 664,379.54 and 127,303 is: 190,986.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,845.52 : 664,379.54 = 127,303 : x
  2. Step 2: Convert to fraction form
    442,845.52/664,379.54 = 127,303/x
  3. Step 3: Cross multiply
    442,845.52x = 664,379.54 × 127,303
  4. Step 4: Simplify right side
    442,845.52x = 84,577,508,580.62
  5. Step 5: Solve for x
    x = 84,577,508,580.62/442,845.52
  6. Step 6: Final answer
    x = 190,986.48

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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.