Finding the Fourth Proportional to 221,661.70, 311,113.70 and 221,661.70
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Solution
The fourth proportional to 221,661.70, 311,113.70 and 221,661.70 is: 311,113.70
Step by Step Solution
- Step 1: Write the proportion equation
221,661.70 : 311,113.70 = 221,661.70 : x - Step 2: Convert to fraction form
221,661.70/311,113.70 = 221,661.70/x - Step 3: Cross multiply
221,661.70x = 311,113.70 × 221,661.70 - Step 4: Simplify right side
221,661.70x = 68,961,991,635.29 - Step 5: Solve for x
x = 68,961,991,635.29/221,661.70 - Step 6: Final answer
x = 311,113.70
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Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.