Finding the Fourth Proportional to 283,755.59, 391,585.74 and 156,435.74
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Solution
The fourth proportional to 283,755.59, 391,585.74 and 156,435.74 is: 215,882.99
Step by Step Solution
- Step 1: Write the proportion equation
283,755.59 : 391,585.74 = 156,435.74 : x - Step 2: Convert to fraction form
283,755.59/391,585.74 = 156,435.74/x - Step 3: Cross multiply
283,755.59x = 391,585.74 × 156,435.74 - Step 4: Simplify right side
283,755.59x = 61,258,004,814.18 - Step 5: Solve for x
x = 61,258,004,814.18/283,755.59 - Step 6: Final answer
x = 215,882.99
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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.