Finding the Fourth Proportional to 312,972.62, 431,897.94 and 169,729.79
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Solution
The fourth proportional to 312,972.62, 431,897.94 and 169,729.79 is: 234,224.79
Step by Step Solution
- Step 1: Write the proportion equation
312,972.62 : 431,897.94 = 169,729.79 : x - Step 2: Convert to fraction form
312,972.62/431,897.94 = 169,729.79/x - Step 3: Cross multiply
312,972.62x = 431,897.94 × 169,729.79 - Step 4: Simplify right side
312,972.62x = 73,305,944,498.14 - Step 5: Solve for x
x = 73,305,944,498.14/312,972.62 - Step 6: Final answer
x = 234,224.79
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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.