Finding the Fourth Proportional to 311,649.93, 430,431.60 and 209,498.23
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Solution
The fourth proportional to 311,649.93, 430,431.60 and 209,498.23 is: 289,346.00
Step by Step Solution
- Step 1: Write the proportion equation
311,649.93 : 430,431.60 = 209,498.23 : x - Step 2: Convert to fraction form
311,649.93/430,431.60 = 209,498.23/x - Step 3: Cross multiply
311,649.93x = 430,431.60 × 209,498.23 - Step 4: Simplify right side
311,649.93x = 90,174,659,659.73 - Step 5: Solve for x
x = 90,174,659,659.73/311,649.93 - Step 6: Final answer
x = 289,346.00
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1.5x scale
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.