Finding the Fourth Proportional to 221,721.26, 305,975.36 and 121,119.26
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Solution
The fourth proportional to 221,721.26, 305,975.36 and 121,119.26 is: 167,144.59
Step by Step Solution
- Step 1: Write the proportion equation
221,721.26 : 305,975.36 = 121,119.26 : x - Step 2: Convert to fraction form
221,721.26/305,975.36 = 121,119.26/x - Step 3: Cross multiply
221,721.26x = 305,975.36 × 121,119.26 - Step 4: Simplify right side
221,721.26x = 37,059,508,878.64 - Step 5: Solve for x
x = 37,059,508,878.64/221,721.26 - Step 6: Final answer
x = 167,144.59
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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.