Finding the Fourth Proportional to 209,615,284.20, 289,257,287.96 and 115,529,146.02
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Solution
The fourth proportional to 209,615,284.20, 289,257,287.96 and 115,529,146.02 is: 159,423,715.62
Step by Step Solution
- Step 1: Write the proportion equation
209,615,284.20 : 289,257,287.96 = 115,529,146.02 : x - Step 2: Convert to fraction form
209,615,284.20/289,257,287.96 = 115,529,146.02/x - Step 3: Cross multiply
209,615,284.20x = 289,257,287.96 × 115,529,146.02 - Step 4: Simplify right side
209,615,284.20x = 33,417,647,458,080,024 - Step 5: Solve for x
x = 33,417,647,458,080,024/209,615,284.20 - Step 6: Final answer
x = 159,423,715.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.