Finding the Fourth Proportional to 316,190.70, 436,523.70 and 209,071.44
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Solution
The fourth proportional to 316,190.70, 436,523.70 and 209,071.44 is: 288,637.96
Step by Step Solution
- Step 1: Write the proportion equation
316,190.70 : 436,523.70 = 209,071.44 : x - Step 2: Convert to fraction form
316,190.70/436,523.70 = 209,071.44/x - Step 3: Cross multiply
316,190.70x = 436,523.70 × 209,071.44 - Step 4: Simplify right side
316,190.70x = 91,264,638,553.13 - Step 5: Solve for x
x = 91,264,638,553.13/316,190.70 - Step 6: Final answer
x = 288,637.96
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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.