Finding the Fourth Proportional to 279,239.20, 385,351.77 and 151,915.70
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Solution
The fourth proportional to 279,239.20, 385,351.77 and 151,915.70 is: 209,644.58
Step by Step Solution
- Step 1: Write the proportion equation
279,239.20 : 385,351.77 = 151,915.70 : x - Step 2: Convert to fraction form
279,239.20/385,351.77 = 151,915.70/x - Step 3: Cross multiply
279,239.20x = 385,351.77 × 151,915.70 - Step 4: Simplify right side
279,239.20x = 58,540,983,556.95 - Step 5: Solve for x
x = 58,540,983,556.95/279,239.20 - Step 6: Final answer
x = 209,644.58
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.