Finding the Fourth Proportional to 283,140.11, 390,733.42 and 155,815.70
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Solution
The fourth proportional to 283,140.11, 390,733.42 and 155,815.70 is: 215,025.70
Step by Step Solution
- Step 1: Write the proportion equation
283,140.11 : 390,733.42 = 155,815.70 : x - Step 2: Convert to fraction form
283,140.11/390,733.42 = 155,815.70/x - Step 3: Cross multiply
283,140.11x = 390,733.42 × 155,815.70 - Step 4: Simplify right side
283,140.11x = 60,882,400,571.62 - Step 5: Solve for x
x = 60,882,400,571.62/283,140.11 - Step 6: Final answer
x = 215,025.70
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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.