Finding the Fourth Proportional to 311,919.80, 467,879.70 and 292,236.80
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Solution
The fourth proportional to 311,919.80, 467,879.70 and 292,236.80 is: 438,355.20
Step by Step Solution
- Step 1: Write the proportion equation
311,919.80 : 467,879.70 = 292,236.80 : x - Step 2: Convert to fraction form
311,919.80/467,879.70 = 292,236.80/x - Step 3: Cross multiply
311,919.80x = 467,879.70 × 292,236.80 - Step 4: Simplify right side
311,919.80x = 136,731,666,312.96 - Step 5: Solve for x
x = 136,731,666,312.96/311,919.80 - Step 6: Final answer
x = 438,355.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.