Finding the Fourth Proportional to 279,431,995.80, 419,147,993.70 and 97,660,219.80
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Solution
The fourth proportional to 279,431,995.80, 419,147,993.70 and 97,660,219.80 is: 146,490,329.70
Step by Step Solution
- Step 1: Write the proportion equation
279,431,995.80 : 419,147,993.70 = 97,660,219.80 : x - Step 2: Convert to fraction form
279,431,995.80/419,147,993.70 = 97,660,219.80/x - Step 3: Cross multiply
279,431,995.80x = 419,147,993.70 × 97,660,219.80 - Step 4: Simplify right side
279,431,995.80x = 40,934,085,193,471,016 - Step 5: Solve for x
x = 40,934,085,193,471,016/279,431,995.80 - Step 6: Final answer
x = 146,490,329.70
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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.