Finding the Fourth Proportional to 386,380.23, 579,161.30 and 129,968.70
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Solution
The fourth proportional to 386,380.23, 579,161.30 and 129,968.70 is: 194,815.46
Step by Step Solution
- Step 1: Write the proportion equation
386,380.23 : 579,161.30 = 129,968.70 : x - Step 2: Convert to fraction form
386,380.23/579,161.30 = 129,968.70/x - Step 3: Cross multiply
386,380.23x = 579,161.30 × 129,968.70 - Step 4: Simplify right side
386,380.23x = 75,272,840,601.47 - Step 5: Solve for x
x = 75,272,840,601.47/386,380.23 - Step 6: Final answer
x = 194,815.46
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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.