Finding the Fourth Proportional to 217,721.74, 300,455.77 and 122,228.62
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Solution
The fourth proportional to 217,721.74, 300,455.77 and 122,228.62 is: 168,675.37
Step by Step Solution
- Step 1: Write the proportion equation
217,721.74 : 300,455.77 = 122,228.62 : x - Step 2: Convert to fraction form
217,721.74/300,455.77 = 122,228.62/x - Step 3: Cross multiply
217,721.74x = 300,455.77 × 122,228.62 - Step 4: Simplify right side
217,721.74x = 36,724,294,138.14 - Step 5: Solve for x
x = 36,724,294,138.14/217,721.74 - Step 6: Final answer
x = 168,675.37
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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.