Finding the Fourth Proportional to 231,830.67, 319,934.25 and 129,860.49
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Solution
The fourth proportional to 231,830.67, 319,934.25 and 129,860.49 is: 179,211.92
Step by Step Solution
- Step 1: Write the proportion equation
231,830.67 : 319,934.25 = 129,860.49 : x - Step 2: Convert to fraction form
231,830.67/319,934.25 = 129,860.49/x - Step 3: Cross multiply
231,830.67x = 319,934.25 × 129,860.49 - Step 4: Simplify right side
231,830.67x = 41,546,818,472.78 - Step 5: Solve for x
x = 41,546,818,472.78/231,830.67 - Step 6: Final answer
x = 179,211.92
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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.