Finding the Fourth Proportional to 311,944,760.28, 430,497,217.80 and 172,715,518.08
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Solution
The fourth proportional to 311,944,760.28, 430,497,217.80 and 172,715,518.08 is: 238,354,861.09
Step by Step Solution
- Step 1: Write the proportion equation
311,944,760.28 : 430,497,217.80 = 172,715,518.08 : x - Step 2: Convert to fraction form
311,944,760.28/430,497,217.80 = 172,715,518.08/x - Step 3: Cross multiply
311,944,760.28x = 430,497,217.80 × 172,715,518.08 - Step 4: Simplify right side
311,944,760.28x = 74,353,550,004,325,600 - Step 5: Solve for x
x = 74,353,550,004,325,600/311,944,760.28 - Step 6: Final answer
x = 238,354,861.09
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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.