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Finding the Fourth Proportional to 400,994.55, 553,372.30 and 239,887.44

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Solution

The fourth proportional to 400,994.55, 553,372.30 and 239,887.44 is: 331,044.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,994.55 : 553,372.30 = 239,887.44 : x
  2. Step 2: Convert to fraction form
    400,994.55/553,372.30 = 239,887.44/x
  3. Step 3: Cross multiply
    400,994.55x = 553,372.30 × 239,887.44
  4. Step 4: Simplify right side
    400,994.55x = 132,747,064,413.91
  5. Step 5: Solve for x
    x = 132,747,064,413.91/400,994.55
  6. Step 6: Final answer
    x = 331,044.56

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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.