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Finding the Fourth Proportional to 505,259.76, 757,922.45 and 168,286.80

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Solution

The fourth proportional to 505,259.76, 757,922.45 and 168,286.80 is: 252,441.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,259.76 : 757,922.45 = 168,286.80 : x
  2. Step 2: Convert to fraction form
    505,259.76/757,922.45 = 168,286.80/x
  3. Step 3: Cross multiply
    505,259.76x = 757,922.45 × 168,286.80
  4. Step 4: Simplify right side
    505,259.76x = 127,548,342,917.23
  5. Step 5: Solve for x
    x = 127,548,342,917.23/505,259.76
  6. Step 6: Final answer
    x = 252,441.13

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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.