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Finding the Fourth Proportional to 508,640.37, 701,936.31 and 279,220.42

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Solution

The fourth proportional to 508,640.37, 701,936.31 and 279,220.42 is: 385,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,640.37 : 701,936.31 = 279,220.42 : x
  2. Step 2: Convert to fraction form
    508,640.37/701,936.31 = 279,220.42/x
  3. Step 3: Cross multiply
    508,640.37x = 701,936.31 × 279,220.42
  4. Step 4: Simplify right side
    508,640.37x = 195,994,951,291.45
  5. Step 5: Solve for x
    x = 195,994,951,291.45/508,640.37
  6. Step 6: Final answer
    x = 385,331.10

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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.