Finding the Fourth Proportional to 311,873.66, 430,385.96 and 168,633.68
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Solution
The fourth proportional to 311,873.66, 430,385.96 and 168,633.68 is: 232,714.65
Step by Step Solution
- Step 1: Write the proportion equation
311,873.66 : 430,385.96 = 168,633.68 : x - Step 2: Convert to fraction form
311,873.66/430,385.96 = 168,633.68/x - Step 3: Cross multiply
311,873.66x = 430,385.96 × 168,633.68 - Step 4: Simplify right side
311,873.66x = 72,577,568,255.13 - Step 5: Solve for x
x = 72,577,568,255.13/311,873.66 - Step 6: Final answer
x = 232,714.65
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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.