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Finding the Fourth Proportional to 505,409.19, 757,860.25 and 168,331.33

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Solution

The fourth proportional to 505,409.19, 757,860.25 and 168,331.33 is: 252,412.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,409.19 : 757,860.25 = 168,331.33 : x
  2. Step 2: Convert to fraction form
    505,409.19/757,860.25 = 168,331.33/x
  3. Step 3: Cross multiply
    505,409.19x = 757,860.25 × 168,331.33
  4. Step 4: Simplify right side
    505,409.19x = 127,571,623,415.80
  5. Step 5: Solve for x
    x = 127,571,623,415.80/505,409.19
  6. Step 6: Final answer
    x = 252,412.55

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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.