Finding the Fourth Proportional to 221,312.36, 331,968.36 and 81,081.92
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Solution
The fourth proportional to 221,312.36, 331,968.36 and 81,081.92 is: 121,622.81
Step by Step Solution
- Step 1: Write the proportion equation
221,312.36 : 331,968.36 = 81,081.92 : x - Step 2: Convert to fraction form
221,312.36/331,968.36 = 81,081.92/x - Step 3: Cross multiply
221,312.36x = 331,968.36 × 81,081.92 - Step 4: Simplify right side
221,312.36x = 26,916,632,008.05 - Step 5: Solve for x
x = 26,916,632,008.05/221,312.36 - Step 6: Final answer
x = 121,622.81
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.