Finding the Fourth Proportional to 212,809.20, 319,213.80 and 178,594.80
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Solution
The fourth proportional to 212,809.20, 319,213.80 and 178,594.80 is: 267,892.20
Step by Step Solution
- Step 1: Write the proportion equation
212,809.20 : 319,213.80 = 178,594.80 : x - Step 2: Convert to fraction form
212,809.20/319,213.80 = 178,594.80/x - Step 3: Cross multiply
212,809.20x = 319,213.80 × 178,594.80 - Step 4: Simplify right side
212,809.20x = 57,009,924,768.24 - Step 5: Solve for x
x = 57,009,924,768.24/212,809.20 - Step 6: Final answer
x = 267,892.20
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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.