Finding the Fourth Proportional to 228,809.20, 343,213.80 and 213,257.20
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Solution
The fourth proportional to 228,809.20, 343,213.80 and 213,257.20 is: 319,885.80
Step by Step Solution
- Step 1: Write the proportion equation
228,809.20 : 343,213.80 = 213,257.20 : x - Step 2: Convert to fraction form
228,809.20/343,213.80 = 213,257.20/x - Step 3: Cross multiply
228,809.20x = 343,213.80 × 213,257.20 - Step 4: Simplify right side
228,809.20x = 73,192,813,989.36 - Step 5: Solve for x
x = 73,192,813,989.36/228,809.20 - Step 6: Final answer
x = 319,885.80
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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.