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Finding the Fourth Proportional to 400,370.88, 551,252.88 and 339,815.28

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Solution

The fourth proportional to 400,370.88, 551,252.88 and 339,815.28 is: 467,876.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,370.88 : 551,252.88 = 339,815.28 : x
  2. Step 2: Convert to fraction form
    400,370.88/551,252.88 = 339,815.28/x
  3. Step 3: Cross multiply
    400,370.88x = 551,252.88 × 339,815.28
  4. Step 4: Simplify right side
    400,370.88x = 187,324,151,768.01
  5. Step 5: Solve for x
    x = 187,324,151,768.01/400,370.88
  6. Step 6: Final answer
    x = 467,876.56

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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.