Finding the Fourth Proportional to 286,952.87, 395,993.09 and 157,899.21
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Solution
The fourth proportional to 286,952.87, 395,993.09 and 157,899.21 is: 217,899.88
Step by Step Solution
- Step 1: Write the proportion equation
286,952.87 : 395,993.09 = 157,899.21 : x - Step 2: Convert to fraction form
286,952.87/395,993.09 = 157,899.21/x - Step 3: Cross multiply
286,952.87x = 395,993.09 × 157,899.21 - Step 4: Simplify right side
286,952.87x = 62,526,995,286.96 - Step 5: Solve for x
x = 62,526,995,286.96/286,952.87 - Step 6: Final answer
x = 217,899.88
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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.