Finding the Fourth Proportional to 207,724,234.20, 311,586,351.30 and 86,539,939.80
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Solution
The fourth proportional to 207,724,234.20, 311,586,351.30 and 86,539,939.80 is: 129,809,909.70
Step by Step Solution
- Step 1: Write the proportion equation
207,724,234.20 : 311,586,351.30 = 86,539,939.80 : x - Step 2: Convert to fraction form
207,724,234.20/311,586,351.30 = 86,539,939.80/x - Step 3: Cross multiply
207,724,234.20x = 311,586,351.30 × 86,539,939.80 - Step 4: Simplify right side
207,724,234.20x = 26,964,664,084,003,652 - Step 5: Solve for x
x = 26,964,664,084,003,652/207,724,234.20 - Step 6: Final answer
x = 129,809,909.70
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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.