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Finding the Fourth Proportional to 403,668.74, 557,069.98 and 222,379.43

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Solution

The fourth proportional to 403,668.74, 557,069.98 and 222,379.43 is: 306,887.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,668.74 : 557,069.98 = 222,379.43 : x
  2. Step 2: Convert to fraction form
    403,668.74/557,069.98 = 222,379.43/x
  3. Step 3: Cross multiply
    403,668.74x = 557,069.98 × 222,379.43
  4. Step 4: Simplify right side
    403,668.74x = 123,880,902,323.62
  5. Step 5: Solve for x
    x = 123,880,902,323.62/403,668.74
  6. Step 6: Final answer
    x = 306,887.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.