Finding the Fourth Proportional to 217,455.54, 300,087.99 and 121,964.28
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Solution
The fourth proportional to 217,455.54, 300,087.99 and 121,964.28 is: 168,310.34
Step by Step Solution
- Step 1: Write the proportion equation
217,455.54 : 300,087.99 = 121,964.28 : x - Step 2: Convert to fraction form
217,455.54/300,087.99 = 121,964.28/x - Step 3: Cross multiply
217,455.54x = 300,087.99 × 121,964.28 - Step 4: Simplify right side
217,455.54x = 36,600,016,199.66 - Step 5: Solve for x
x = 36,600,016,199.66/217,455.54 - Step 6: Final answer
x = 168,310.34
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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.