Finding the Fourth Proportional to 311,887.01, 430,371.78 and 230,258.70
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Solution
The fourth proportional to 311,887.01, 430,371.78 and 230,258.70 is: 317,733.17
Step by Step Solution
- Step 1: Write the proportion equation
311,887.01 : 430,371.78 = 230,258.70 : x - Step 2: Convert to fraction form
311,887.01/430,371.78 = 230,258.70/x - Step 3: Cross multiply
311,887.01x = 430,371.78 × 230,258.70 - Step 4: Simplify right side
311,887.01x = 99,096,847,011.22 - Step 5: Solve for x
x = 99,096,847,011.22/311,887.01 - Step 6: Final answer
x = 317,733.17
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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.