Finding the Fourth Proportional to 221,973.44, 306,328.80 and 121,378.88
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Solution
The fourth proportional to 221,973.44, 306,328.80 and 121,378.88 is: 167,505.84
Step by Step Solution
- Step 1: Write the proportion equation
221,973.44 : 306,328.80 = 121,378.88 : x - Step 2: Convert to fraction form
221,973.44/306,328.80 = 121,378.88/x - Step 3: Cross multiply
221,973.44x = 306,328.80 × 121,378.88 - Step 4: Simplify right side
221,973.44x = 37,181,846,655.74 - Step 5: Solve for x
x = 37,181,846,655.74/221,973.44 - Step 6: Final answer
x = 167,505.84
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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.