Finding the Fourth Proportional to 221,293,460.80, 331,940,191.20 and 119,256,788.80
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Solution
The fourth proportional to 221,293,460.80, 331,940,191.20 and 119,256,788.80 is: 178,885,183.20
Step by Step Solution
- Step 1: Write the proportion equation
221,293,460.80 : 331,940,191.20 = 119,256,788.80 : x - Step 2: Convert to fraction form
221,293,460.80/331,940,191.20 = 119,256,788.80/x - Step 3: Cross multiply
221,293,460.80x = 331,940,191.20 × 119,256,788.80 - Step 4: Simplify right side
221,293,460.80x = 39,586,121,276,170,016 - Step 5: Solve for x
x = 39,586,121,276,170,016/221,293,460.80 - Step 6: Final answer
x = 178,885,183.20
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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.