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Finding the Fourth Proportional to 505,465.75, 757,945.09 and 168,387.89

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Solution

The fourth proportional to 505,465.75, 757,945.09 and 168,387.89 is: 252,497.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,465.75 : 757,945.09 = 168,387.89 : x
  2. Step 2: Convert to fraction form
    505,465.75/757,945.09 = 168,387.89/x
  3. Step 3: Cross multiply
    505,465.75x = 757,945.09 × 168,387.89
  4. Step 4: Simplify right side
    505,465.75x = 127,628,774,440.96
  5. Step 5: Solve for x
    x = 127,628,774,440.96/505,465.75
  6. Step 6: Final answer
    x = 252,497.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.