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Finding the Fourth Proportional to 499,755.81, 689,662.31 and 273,401.31

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Solution

The fourth proportional to 499,755.81, 689,662.31 and 273,401.31 is: 377,293.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,755.81 : 689,662.31 = 273,401.31 : x
  2. Step 2: Convert to fraction form
    499,755.81/689,662.31 = 273,401.31/x
  3. Step 3: Cross multiply
    499,755.81x = 689,662.31 × 273,401.31
  4. Step 4: Simplify right side
    499,755.81x = 188,554,577,644.62
  5. Step 5: Solve for x
    x = 188,554,577,644.62/499,755.81
  6. Step 6: Final answer
    x = 377,293.42

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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.