Finding the Fourth Proportional to 393,712.18, 590,662.34 and 127,472.99
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Solution
The fourth proportional to 393,712.18, 590,662.34 and 127,472.99 is: 191,239.94
Step by Step Solution
- Step 1: Write the proportion equation
393,712.18 : 590,662.34 = 127,472.99 : x - Step 2: Convert to fraction form
393,712.18/590,662.34 = 127,472.99/x - Step 3: Cross multiply
393,712.18x = 590,662.34 × 127,472.99 - Step 4: Simplify right side
393,712.18x = 75,293,494,560.20 - Step 5: Solve for x
x = 75,293,494,560.20/393,712.18 - Step 6: Final answer
x = 191,239.94
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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.