Finding the Fourth Proportional to 386,381.73, 579,163.54 and 129,970.20
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Solution
The fourth proportional to 386,381.73, 579,163.54 and 129,970.20 is: 194,817.70
Step by Step Solution
- Step 1: Write the proportion equation
386,381.73 : 579,163.54 = 129,970.20 : x - Step 2: Convert to fraction form
386,381.73/579,163.54 = 129,970.20/x - Step 3: Cross multiply
386,381.73x = 579,163.54 × 129,970.20 - Step 4: Simplify right side
386,381.73x = 75,274,001,126.51 - Step 5: Solve for x
x = 75,274,001,126.51/386,381.73 - Step 6: Final answer
x = 194,817.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.