Finding the Fourth Proportional to 311,752.72, 430,218.66 and 168,512.68
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Solution
The fourth proportional to 311,752.72, 430,218.66 and 168,512.68 is: 232,547.45
Step by Step Solution
- Step 1: Write the proportion equation
311,752.72 : 430,218.66 = 168,512.68 : x - Step 2: Convert to fraction form
311,752.72/430,218.66 = 168,512.68/x - Step 3: Cross multiply
311,752.72x = 430,218.66 × 168,512.68 - Step 4: Simplify right side
311,752.72x = 72,497,299,382.61 - Step 5: Solve for x
x = 72,497,299,382.61/311,752.72 - Step 6: Final answer
x = 232,547.45
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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.