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Finding the Fourth Proportional to 400,791.62, 553,092.44 and 219,503.98

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Solution

The fourth proportional to 400,791.62, 553,092.44 and 219,503.98 is: 302,915.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,791.62 : 553,092.44 = 219,503.98 : x
  2. Step 2: Convert to fraction form
    400,791.62/553,092.44 = 219,503.98/x
  3. Step 3: Cross multiply
    400,791.62x = 553,092.44 × 219,503.98
  4. Step 4: Simplify right side
    400,791.62x = 121,405,991,887.91
  5. Step 5: Solve for x
    x = 121,405,991,887.91/400,791.62
  6. Step 6: Final answer
    x = 302,915.49

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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.