Finding the Fourth Proportional to 393,703.05, 543,310.06 and 214,855.05
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Solution
The fourth proportional to 393,703.05, 543,310.06 and 214,855.05 is: 296,499.89
Step by Step Solution
- Step 1: Write the proportion equation
393,703.05 : 543,310.06 = 214,855.05 : x - Step 2: Convert to fraction form
393,703.05/543,310.06 = 214,855.05/x - Step 3: Cross multiply
393,703.05x = 543,310.06 × 214,855.05 - Step 4: Simplify right side
393,703.05x = 116,732,910,106.80 - Step 5: Solve for x
x = 116,732,910,106.80/393,703.05 - Step 6: Final answer
x = 296,499.89
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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.