Finding the Fourth Proportional to 213,880.80, 320,821.20 and 56,125.20
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Solution
The fourth proportional to 213,880.80, 320,821.20 and 56,125.20 is: 84,187.80
Step by Step Solution
- Step 1: Write the proportion equation
213,880.80 : 320,821.20 = 56,125.20 : x - Step 2: Convert to fraction form
213,880.80/320,821.20 = 56,125.20/x - Step 3: Cross multiply
213,880.80x = 320,821.20 × 56,125.20 - Step 4: Simplify right side
213,880.80x = 18,006,154,014.24 - Step 5: Solve for x
x = 18,006,154,014.24/213,880.80 - Step 6: Final answer
x = 84,187.80
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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.