Finding the Fourth Proportional to 266,431,198.80, 399,079,927.80 and 221,081,566.80
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Solution
The fourth proportional to 266,431,198.80, 399,079,927.80 and 221,081,566.80 is: 331,151,967.61
Step by Step Solution
- Step 1: Write the proportion equation
266,431,198.80 : 399,079,927.80 = 221,081,566.80 : x - Step 2: Convert to fraction form
266,431,198.80/399,079,927.80 = 221,081,566.80/x - Step 3: Cross multiply
266,431,198.80x = 399,079,927.80 × 221,081,566.80 - Step 4: Simplify right side
266,431,198.80x = 88,229,215,716,454,880 - Step 5: Solve for x
x = 88,229,215,716,454,880/266,431,198.80 - Step 6: Final answer
x = 331,151,967.61
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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.