Finding the Fourth Proportional to 207,918,578.60, 311,541,944.70 and 131,104,140.20
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Solution
The fourth proportional to 207,918,578.60, 311,541,944.70 and 131,104,140.20 is: 196,444,392.18
Step by Step Solution
- Step 1: Write the proportion equation
207,918,578.60 : 311,541,944.70 = 131,104,140.20 : x - Step 2: Convert to fraction form
207,918,578.60/311,541,944.70 = 131,104,140.20/x - Step 3: Cross multiply
207,918,578.60x = 311,541,944.70 × 131,104,140.20 - Step 4: Simplify right side
207,918,578.60x = 40,844,438,796,129,448 - Step 5: Solve for x
x = 40,844,438,796,129,448/207,918,578.60 - Step 6: Final answer
x = 196,444,392.18
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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.