Finding the Fourth Proportional to 312,211.47, 430,851.09 and 168,971.63
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Solution
The fourth proportional to 312,211.47, 430,851.09 and 168,971.63 is: 233,180.44
Step by Step Solution
- Step 1: Write the proportion equation
312,211.47 : 430,851.09 = 168,971.63 : x - Step 2: Convert to fraction form
312,211.47/430,851.09 = 168,971.63/x - Step 3: Cross multiply
312,211.47x = 430,851.09 × 168,971.63 - Step 4: Simplify right side
312,211.47x = 72,801,608,810.32 - Step 5: Solve for x
x = 72,801,608,810.32/312,211.47 - Step 6: Final answer
x = 233,180.44
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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.