Finding the Fourth Proportional to 221,838.48, 306,132.60 and 121,237.20
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Solution
The fourth proportional to 221,838.48, 306,132.60 and 121,237.20 is: 167,304.88
Step by Step Solution
- Step 1: Write the proportion equation
221,838.48 : 306,132.60 = 121,237.20 : x - Step 2: Convert to fraction form
221,838.48/306,132.60 = 121,237.20/x - Step 3: Cross multiply
221,838.48x = 306,132.60 × 121,237.20 - Step 4: Simplify right side
221,838.48x = 37,114,659,252.72 - Step 5: Solve for x
x = 37,114,659,252.72/221,838.48 - Step 6: Final answer
x = 167,304.88
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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.