Finding the Fourth Proportional to 261,625.70, 392,438.55 and 209,137.70
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Solution
The fourth proportional to 261,625.70, 392,438.55 and 209,137.70 is: 313,706.55
Step by Step Solution
- Step 1: Write the proportion equation
261,625.70 : 392,438.55 = 209,137.70 : x - Step 2: Convert to fraction form
261,625.70/392,438.55 = 209,137.70/x - Step 3: Cross multiply
261,625.70x = 392,438.55 × 209,137.70 - Step 4: Simplify right side
261,625.70x = 82,073,695,738.34 - Step 5: Solve for x
x = 82,073,695,738.34/261,625.70 - Step 6: Final answer
x = 313,706.55
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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.