Finding the Fourth Proportional to 217,243.38, 299,808.17 and 121,756.23
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Solution
The fourth proportional to 217,243.38, 299,808.17 and 121,756.23 is: 168,030.49
Step by Step Solution
- Step 1: Write the proportion equation
217,243.38 : 299,808.17 = 121,756.23 : x - Step 2: Convert to fraction form
217,243.38/299,808.17 = 121,756.23/x - Step 3: Cross multiply
217,243.38x = 299,808.17 × 121,756.23 - Step 4: Simplify right side
217,243.38x = 36,503,512,350.20 - Step 5: Solve for x
x = 36,503,512,350.20/217,243.38 - Step 6: Final answer
x = 168,030.49
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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.