Finding the Fourth Proportional to 221,405.70, 331,616.48 and 221,405.70
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Solution
The fourth proportional to 221,405.70, 331,616.48 and 221,405.70 is: 331,616.48
Step by Step Solution
- Step 1: Write the proportion equation
221,405.70 : 331,616.48 = 221,405.70 : x - Step 2: Convert to fraction form
221,405.70/331,616.48 = 221,405.70/x - Step 3: Cross multiply
221,405.70x = 331,616.48 × 221,405.70 - Step 4: Simplify right side
221,405.70x = 73,421,777,778.91 - Step 5: Solve for x
x = 73,421,777,778.91/221,405.70 - Step 6: Final answer
x = 331,616.48
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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.