Finding the Fourth Proportional to 403,781.70, 557,243.21 and 222,493.41
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Solution
The fourth proportional to 403,781.70, 557,243.21 and 222,493.41 is: 307,054.38
Step by Step Solution
- Step 1: Write the proportion equation
403,781.70 : 557,243.21 = 222,493.41 : x - Step 2: Convert to fraction form
403,781.70/557,243.21 = 222,493.41/x - Step 3: Cross multiply
403,781.70x = 557,243.21 × 222,493.41 - Step 4: Simplify right side
403,781.70x = 123,982,940,981.23 - Step 5: Solve for x
x = 123,982,940,981.23/403,781.70 - Step 6: Final answer
x = 307,054.38
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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.