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Finding the Fourth Proportional to 505,765.25, 698,004.30 and 276,357.39

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Solution

The fourth proportional to 505,765.25, 698,004.30 and 276,357.39 is: 381,399.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,765.25 : 698,004.30 = 276,357.39 : x
  2. Step 2: Convert to fraction form
    505,765.25/698,004.30 = 276,357.39/x
  3. Step 3: Cross multiply
    505,765.25x = 698,004.30 × 276,357.39
  4. Step 4: Simplify right side
    505,765.25x = 192,898,644,975.60
  5. Step 5: Solve for x
    x = 192,898,644,975.60/505,765.25
  6. Step 6: Final answer
    x = 381,399.56

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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.