Finding the Fourth Proportional to 287,170.25, 430,755.48 and 129,214.18
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Solution
The fourth proportional to 287,170.25, 430,755.48 and 129,214.18 is: 193,821.31
Step by Step Solution
- Step 1: Write the proportion equation
287,170.25 : 430,755.48 = 129,214.18 : x - Step 2: Convert to fraction form
287,170.25/430,755.48 = 129,214.18/x - Step 3: Cross multiply
287,170.25x = 430,755.48 × 129,214.18 - Step 4: Simplify right side
287,170.25x = 55,659,715,051.82 - Step 5: Solve for x
x = 55,659,715,051.82/287,170.25 - Step 6: Final answer
x = 193,821.31
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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.