Finding the Fourth Proportional to 221,490.12, 332,278.94 and 81,249.96
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Solution
The fourth proportional to 221,490.12, 332,278.94 and 81,249.96 is: 121,890.99
Step by Step Solution
- Step 1: Write the proportion equation
221,490.12 : 332,278.94 = 81,249.96 : x - Step 2: Convert to fraction form
221,490.12/332,278.94 = 81,249.96/x - Step 3: Cross multiply
221,490.12x = 332,278.94 × 81,249.96 - Step 4: Simplify right side
221,490.12x = 26,997,650,583.84 - Step 5: Solve for x
x = 26,997,650,583.84/221,490.12 - Step 6: Final answer
x = 121,890.99
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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.