Finding the Fourth Proportional to 221,288.10, 305,405.01 and 135,229.38
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Solution
The fourth proportional to 221,288.10, 305,405.01 and 135,229.38 is: 186,633.31
Step by Step Solution
- Step 1: Write the proportion equation
221,288.10 : 305,405.01 = 135,229.38 : x - Step 2: Convert to fraction form
221,288.10/305,405.01 = 135,229.38/x - Step 3: Cross multiply
221,288.10x = 305,405.01 × 135,229.38 - Step 4: Simplify right side
221,288.10x = 41,299,730,151.19 - Step 5: Solve for x
x = 41,299,730,151.19/221,288.10 - Step 6: Final answer
x = 186,633.31
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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.