Finding the Fourth Proportional to 221,933.50, 306,268.26 and 121,331.50
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Solution
The fourth proportional to 221,933.50, 306,268.26 and 121,331.50 is: 167,437.49
Step by Step Solution
- Step 1: Write the proportion equation
221,933.50 : 306,268.26 = 121,331.50 : x - Step 2: Convert to fraction form
221,933.50/306,268.26 = 121,331.50/x - Step 3: Cross multiply
221,933.50x = 306,268.26 × 121,331.50 - Step 4: Simplify right side
221,933.50x = 37,159,987,388.19 - Step 5: Solve for x
x = 37,159,987,388.19/221,933.50 - Step 6: Final answer
x = 167,437.49
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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.