Finding the Fourth Proportional to 386,690.36, 579,897.12 and 133,902.97
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Solution
The fourth proportional to 386,690.36, 579,897.12 and 133,902.97 is: 200,806.53
Step by Step Solution
- Step 1: Write the proportion equation
386,690.36 : 579,897.12 = 133,902.97 : x - Step 2: Convert to fraction form
386,690.36/579,897.12 = 133,902.97/x - Step 3: Cross multiply
386,690.36x = 579,897.12 × 133,902.97 - Step 4: Simplify right side
386,690.36x = 77,649,948,976.76 - Step 5: Solve for x
x = 77,649,948,976.76/386,690.36 - Step 6: Final answer
x = 200,806.53
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.