Finding the Fourth Proportional to 266,431,187.80, 399,079,911.30 and 221,081,555.80
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Solution
The fourth proportional to 266,431,187.80, 399,079,911.30 and 221,081,555.80 is: 331,151,951.12
Step by Step Solution
- Step 1: Write the proportion equation
266,431,187.80 : 399,079,911.30 = 221,081,555.80 : x - Step 2: Convert to fraction form
266,431,187.80/399,079,911.30 = 221,081,555.80/x - Step 3: Cross multiply
266,431,187.80x = 399,079,911.30 × 221,081,555.80 - Step 4: Simplify right side
266,431,187.80x = 88,229,207,678,730,000 - Step 5: Solve for x
x = 88,229,207,678,730,000/266,431,187.80 - Step 6: Final answer
x = 331,151,951.12
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.