Finding the Fourth Proportional to 231,346.62, 319,256.12 and 129,370.92
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Solution
The fourth proportional to 231,346.62, 319,256.12 and 129,370.92 is: 178,530.63
Step by Step Solution
- Step 1: Write the proportion equation
231,346.62 : 319,256.12 = 129,370.92 : x - Step 2: Convert to fraction form
231,346.62/319,256.12 = 129,370.92/x - Step 3: Cross multiply
231,346.62x = 319,256.12 × 129,370.92 - Step 4: Simplify right side
231,346.62x = 41,302,457,960.03 - Step 5: Solve for x
x = 41,302,457,960.03/231,346.62 - Step 6: Final answer
x = 178,530.63
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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.