Finding the Fourth Proportional to 221,617,570.85, 332,426,356.28 and 129,784,566.05
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Solution
The fourth proportional to 221,617,570.85, 332,426,356.28 and 129,784,566.05 is: 194,676,849.08
Step by Step Solution
- Step 1: Write the proportion equation
221,617,570.85 : 332,426,356.28 = 129,784,566.05 : x - Step 2: Convert to fraction form
221,617,570.85/332,426,356.28 = 129,784,566.05/x - Step 3: Cross multiply
221,617,570.85x = 332,426,356.28 × 129,784,566.05 - Step 4: Simplify right side
221,617,570.85x = 43,143,810,392,733,568 - Step 5: Solve for x
x = 43,143,810,392,733,568/221,617,570.85 - Step 6: Final answer
x = 194,676,849.08
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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.