Finding the Fourth Proportional to 386,721.96, 533,668.26 and 214,629.94
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Solution
The fourth proportional to 386,721.96, 533,668.26 and 214,629.94 is: 296,184.85
Step by Step Solution
- Step 1: Write the proportion equation
386,721.96 : 533,668.26 = 214,629.94 : x - Step 2: Convert to fraction form
386,721.96/533,668.26 = 214,629.94/x - Step 3: Cross multiply
386,721.96x = 533,668.26 × 214,629.94 - Step 4: Simplify right side
386,721.96x = 114,541,186,623.70 - Step 5: Solve for x
x = 114,541,186,623.70/386,721.96 - Step 6: Final answer
x = 296,184.85
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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.