Finding the Fourth Proportional to 217,720.74, 300,454.40 and 122,227.62
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Solution
The fourth proportional to 217,720.74, 300,454.40 and 122,227.62 is: 168,673.99
Step by Step Solution
- Step 1: Write the proportion equation
217,720.74 : 300,454.40 = 122,227.62 : x - Step 2: Convert to fraction form
217,720.74/300,454.40 = 122,227.62/x - Step 3: Cross multiply
217,720.74x = 300,454.40 × 122,227.62 - Step 4: Simplify right side
217,720.74x = 36,723,825,619.39 - Step 5: Solve for x
x = 36,723,825,619.39/217,720.74 - Step 6: Final answer
x = 168,673.99
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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.