Finding the Fourth Proportional to 312,603.20, 431,391.84 and 169,366.88
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Solution
The fourth proportional to 312,603.20, 431,391.84 and 169,366.88 is: 233,725.98
Step by Step Solution
- Step 1: Write the proportion equation
312,603.20 : 431,391.84 = 169,366.88 : x - Step 2: Convert to fraction form
312,603.20/431,391.84 = 169,366.88/x - Step 3: Cross multiply
312,603.20x = 431,391.84 × 169,366.88 - Step 4: Simplify right side
312,603.20x = 73,063,489,998.26 - Step 5: Solve for x
x = 73,063,489,998.26/312,603.20 - Step 6: Final answer
x = 233,725.98
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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.