Finding the Fourth Proportional to 218,606,276.79, 327,966,929.13 and 78,560,882.20
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Solution
The fourth proportional to 218,606,276.79, 327,966,929.13 and 78,560,882.20 is: 117,861,992.18
Step by Step Solution
- Step 1: Write the proportion equation
218,606,276.79 : 327,966,929.13 = 78,560,882.20 : x - Step 2: Convert to fraction form
218,606,276.79/327,966,929.13 = 78,560,882.20/x - Step 3: Cross multiply
218,606,276.79x = 327,966,929.13 × 78,560,882.20 - Step 4: Simplify right side
218,606,276.79x = 25,765,371,284,877,680 - Step 5: Solve for x
x = 25,765,371,284,877,680/218,606,276.79 - Step 6: Final answer
x = 117,861,992.18
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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.