Finding the Fourth Proportional to 221,105.97, 305,087.99 and 130,455.09
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Solution
The fourth proportional to 221,105.97, 305,087.99 and 130,455.09 is: 180,005.45
Step by Step Solution
- Step 1: Write the proportion equation
221,105.97 : 305,087.99 = 130,455.09 : x - Step 2: Convert to fraction form
221,105.97/305,087.99 = 130,455.09/x - Step 3: Cross multiply
221,105.97x = 305,087.99 × 130,455.09 - Step 4: Simplify right side
221,105.97x = 39,800,280,541.09 - Step 5: Solve for x
x = 39,800,280,541.09/221,105.97 - Step 6: Final answer
x = 180,005.45
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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.