Finding the Fourth Proportional to 213,077.66, 319,532.99 and 79,885.31
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Solution
The fourth proportional to 213,077.66, 319,532.99 and 79,885.31 is: 119,796.65
Step by Step Solution
- Step 1: Write the proportion equation
213,077.66 : 319,532.99 = 79,885.31 : x - Step 2: Convert to fraction form
213,077.66/319,532.99 = 79,885.31/x - Step 3: Cross multiply
213,077.66x = 319,532.99 × 79,885.31 - Step 4: Simplify right side
213,077.66x = 25,525,989,964.29 - Step 5: Solve for x
x = 25,525,989,964.29/213,077.66 - Step 6: Final answer
x = 119,796.65
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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.