Finding the Fourth Proportional to 421,939.98, 582,277.82 and 230,965.47
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Solution
The fourth proportional to 421,939.98, 582,277.82 and 230,965.47 is: 318,732.70
Step by Step Solution
- Step 1: Write the proportion equation
421,939.98 : 582,277.82 = 230,965.47 : x - Step 2: Convert to fraction form
421,939.98/582,277.82 = 230,965.47/x - Step 3: Cross multiply
421,939.98x = 582,277.82 × 230,965.47 - Step 4: Simplify right side
421,939.98x = 134,486,069,212.05 - Step 5: Solve for x
x = 134,486,069,212.05/421,939.98 - Step 6: Final answer
x = 318,732.70
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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.