Finding the Fourth Proportional to 305,918.41, 422,179.26 and 209,324.75
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Solution
The fourth proportional to 305,918.41, 422,179.26 and 209,324.75 is: 288,876.26
Step by Step Solution
- Step 1: Write the proportion equation
305,918.41 : 422,179.26 = 209,324.75 : x - Step 2: Convert to fraction form
305,918.41/422,179.26 = 209,324.75/x - Step 3: Cross multiply
305,918.41x = 422,179.26 × 209,324.75 - Step 4: Simplify right side
305,918.41x = 88,372,564,897.17 - Step 5: Solve for x
x = 88,372,564,897.17/305,918.41 - Step 6: Final answer
x = 288,876.26
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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.