Finding the Fourth Proportional to 664,284.70, 996,427.05 and 221,052.70
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Solution
The fourth proportional to 664,284.70, 996,427.05 and 221,052.70 is: 331,579.05
Step by Step Solution
- Step 1: Write the proportion equation
664,284.70 : 996,427.05 = 221,052.70 : x - Step 2: Convert to fraction form
664,284.70/996,427.05 = 221,052.70/x - Step 3: Cross multiply
664,284.70x = 996,427.05 × 221,052.70 - Step 4: Simplify right side
664,284.70x = 220,262,889,755.54 - Step 5: Solve for x
x = 220,262,889,755.54/664,284.70 - Step 6: Final answer
x = 331,579.05
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Double scale
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Similar ratio
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1.5x scale
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.