Finding the Fourth Proportional to 221,664.70, 311,117.90 and 221,664.70
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Solution
The fourth proportional to 221,664.70, 311,117.90 and 221,664.70 is: 311,117.90
Step by Step Solution
- Step 1: Write the proportion equation
221,664.70 : 311,117.90 = 221,664.70 : x - Step 2: Convert to fraction form
221,664.70/311,117.90 = 221,664.70/x - Step 3: Cross multiply
221,664.70x = 311,117.90 × 221,664.70 - Step 4: Simplify right side
221,664.70x = 68,963,855,968.13 - Step 5: Solve for x
x = 68,963,855,968.13/221,664.70 - Step 6: Final answer
x = 311,117.90
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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.