Finding the Fourth Proportional to 311,640.60, 430,064.20 and 168,400.68
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Solution
The fourth proportional to 311,640.60, 430,064.20 and 168,400.68 is: 232,393.03
Step by Step Solution
- Step 1: Write the proportion equation
311,640.60 : 430,064.20 = 168,400.68 : x - Step 2: Convert to fraction form
311,640.60/430,064.20 = 168,400.68/x - Step 3: Cross multiply
311,640.60x = 430,064.20 × 168,400.68 - Step 4: Simplify right side
311,640.60x = 72,423,103,723.66 - Step 5: Solve for x
x = 72,423,103,723.66/311,640.60 - Step 6: Final answer
x = 232,393.03
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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.