Finding the Fourth Proportional to 319,486.29, 441,156.42 and 285,434.70
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Solution
The fourth proportional to 319,486.29, 441,156.42 and 285,434.70 is: 394,136.95
Step by Step Solution
- Step 1: Write the proportion equation
319,486.29 : 441,156.42 = 285,434.70 : x - Step 2: Convert to fraction form
319,486.29/441,156.42 = 285,434.70/x - Step 3: Cross multiply
319,486.29x = 441,156.42 × 285,434.70 - Step 4: Simplify right side
319,486.29x = 125,921,350,395.77 - Step 5: Solve for x
x = 125,921,350,395.77/319,486.29 - Step 6: Final answer
x = 394,136.95
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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.