Finding the Fourth Proportional to 221,392,135.48, 331,800,152.99 and 90,081,382.72
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Solution
The fourth proportional to 221,392,135.48, 331,800,152.99 and 90,081,382.72 is: 135,004,870.45
Step by Step Solution
- Step 1: Write the proportion equation
221,392,135.48 : 331,800,152.99 = 90,081,382.72 : x - Step 2: Convert to fraction form
221,392,135.48/331,800,152.99 = 90,081,382.72/x - Step 3: Cross multiply
221,392,135.48x = 331,800,152.99 × 90,081,382.72 - Step 4: Simplify right side
221,392,135.48x = 29,889,016,568,046,744 - Step 5: Solve for x
x = 29,889,016,568,046,744/221,392,135.48 - Step 6: Final answer
x = 135,004,870.45
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1.5x scale
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.