Finding the Fourth Proportional to 393,907.08, 543,589.62 and 215,057.80
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Solution
The fourth proportional to 393,907.08, 543,589.62 and 215,057.80 is: 296,778.59
Step by Step Solution
- Step 1: Write the proportion equation
393,907.08 : 543,589.62 = 215,057.80 : x - Step 2: Convert to fraction form
393,907.08/543,589.62 = 215,057.80/x - Step 3: Cross multiply
393,907.08x = 543,589.62 × 215,057.80 - Step 4: Simplify right side
393,907.08x = 116,903,187,780.04 - Step 5: Solve for x
x = 116,903,187,780.04/393,907.08 - Step 6: Final answer
x = 296,778.59
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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.