Finding the Fourth Proportional to 394,821.81, 544,921.09 and 222,788.54
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Solution
The fourth proportional to 394,821.81, 544,921.09 and 222,788.54 is: 307,485.99
Step by Step Solution
- Step 1: Write the proportion equation
394,821.81 : 544,921.09 = 222,788.54 : x - Step 2: Convert to fraction form
394,821.81/544,921.09 = 222,788.54/x - Step 3: Cross multiply
394,821.81x = 544,921.09 × 222,788.54 - Step 4: Simplify right side
394,821.81x = 121,402,174,861.64 - Step 5: Solve for x
x = 121,402,174,861.64/394,821.81 - Step 6: Final answer
x = 307,485.99
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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.