Finding the Fourth Proportional to 312,942.49, 431,860.75 and 169,702.49
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Solution
The fourth proportional to 312,942.49, 431,860.75 and 169,702.49 is: 234,189.50
Step by Step Solution
- Step 1: Write the proportion equation
312,942.49 : 431,860.75 = 169,702.49 : x - Step 2: Convert to fraction form
312,942.49/431,860.75 = 169,702.49/x - Step 3: Cross multiply
312,942.49x = 431,860.75 × 169,702.49 - Step 4: Simplify right side
312,942.49x = 73,287,845,263.66 - Step 5: Solve for x
x = 73,287,845,263.66/312,942.49 - Step 6: Final answer
x = 234,189.50
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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.