Finding the Fourth Proportional to 278,866.25, 418,224.65 and 121,057.19
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Solution
The fourth proportional to 278,866.25, 418,224.65 and 121,057.19 is: 181,553.35
Step by Step Solution
- Step 1: Write the proportion equation
278,866.25 : 418,224.65 = 121,057.19 : x - Step 2: Convert to fraction form
278,866.25/418,224.65 = 121,057.19/x - Step 3: Cross multiply
278,866.25x = 418,224.65 × 121,057.19 - Step 4: Simplify right side
278,866.25x = 50,629,100,917.73 - Step 5: Solve for x
x = 50,629,100,917.73/278,866.25 - Step 6: Final answer
x = 181,553.35
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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.