Finding the Fourth Proportional to 221,038.38, 331,321.50 and 126,064.09
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Solution
The fourth proportional to 221,038.38, 331,321.50 and 126,064.09 is: 188,961.50
Step by Step Solution
- Step 1: Write the proportion equation
221,038.38 : 331,321.50 = 126,064.09 : x - Step 2: Convert to fraction form
221,038.38/331,321.50 = 126,064.09/x - Step 3: Cross multiply
221,038.38x = 331,321.50 × 126,064.09 - Step 4: Simplify right side
221,038.38x = 41,767,743,753.40 - Step 5: Solve for x
x = 41,767,743,753.40/221,038.38 - Step 6: Final answer
x = 188,961.50
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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.