Finding the Fourth Proportional to 269,188.20, 403,328.70 and 212,812.20
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Solution
The fourth proportional to 269,188.20, 403,328.70 and 212,812.20 is: 318,859.70
Step by Step Solution
- Step 1: Write the proportion equation
269,188.20 : 403,328.70 = 212,812.20 : x - Step 2: Convert to fraction form
269,188.20/403,328.70 = 212,812.20/x - Step 3: Cross multiply
269,188.20x = 403,328.70 × 212,812.20 - Step 4: Simplify right side
269,188.20x = 85,833,267,970.14 - Step 5: Solve for x
x = 85,833,267,970.14/269,188.20 - Step 6: Final answer
x = 318,859.70
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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.