Finding the Fourth Proportional to 285,647.48, 393,921.60 and 170,907.74
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Solution
The fourth proportional to 285,647.48, 393,921.60 and 170,907.74 is: 235,689.99
Step by Step Solution
- Step 1: Write the proportion equation
285,647.48 : 393,921.60 = 170,907.74 : x - Step 2: Convert to fraction form
285,647.48/393,921.60 = 170,907.74/x - Step 3: Cross multiply
285,647.48x = 393,921.60 × 170,907.74 - Step 4: Simplify right side
285,647.48x = 67,324,250,393.18 - Step 5: Solve for x
x = 67,324,250,393.18/285,647.48 - Step 6: Final answer
x = 235,689.99
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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.