Finding the Fourth Proportional to 283,277.28, 390,930.39 and 155,960.70
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Solution
The fourth proportional to 283,277.28, 390,930.39 and 155,960.70 is: 215,230.03
Step by Step Solution
- Step 1: Write the proportion equation
283,277.28 : 390,930.39 = 155,960.70 : x - Step 2: Convert to fraction form
283,277.28/390,930.39 = 155,960.70/x - Step 3: Cross multiply
283,277.28x = 390,930.39 × 155,960.70 - Step 4: Simplify right side
283,277.28x = 60,969,777,275.67 - Step 5: Solve for x
x = 60,969,777,275.67/283,277.28 - Step 6: Final answer
x = 215,230.03
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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.