Finding the Fourth Proportional to 311,996.74, 430,518.47 and 176,022.75
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Solution
The fourth proportional to 311,996.74, 430,518.47 and 176,022.75 is: 242,890.50
Step by Step Solution
- Step 1: Write the proportion equation
311,996.74 : 430,518.47 = 176,022.75 : x - Step 2: Convert to fraction form
311,996.74/430,518.47 = 176,022.75/x - Step 3: Cross multiply
311,996.74x = 430,518.47 × 176,022.75 - Step 4: Simplify right side
311,996.74x = 75,781,042,612.09 - Step 5: Solve for x
x = 75,781,042,612.09/311,996.74 - Step 6: Final answer
x = 242,890.50
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1.5x scale
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.