Finding the Fourth Proportional to 311,780.21, 430,224.55 and 230,151.92
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Solution
The fourth proportional to 311,780.21, 430,224.55 and 230,151.92 is: 317,585.92
Step by Step Solution
- Step 1: Write the proportion equation
311,780.21 : 430,224.55 = 230,151.92 : x - Step 2: Convert to fraction form
311,780.21/430,224.55 = 230,151.92/x - Step 3: Cross multiply
311,780.21x = 430,224.55 × 230,151.92 - Step 4: Simplify right side
311,780.21x = 99,017,003,487.13 - Step 5: Solve for x
x = 99,017,003,487.13/311,780.21 - Step 6: Final answer
x = 317,585.92
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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.