Finding the Fourth Proportional to 221,986.20, 306,331.92 and 126,484.80
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Solution
The fourth proportional to 221,986.20, 306,331.92 and 126,484.80 is: 174,543.88
Step by Step Solution
- Step 1: Write the proportion equation
221,986.20 : 306,331.92 = 126,484.80 : x - Step 2: Convert to fraction form
221,986.20/306,331.92 = 126,484.80/x - Step 3: Cross multiply
221,986.20x = 306,331.92 × 126,484.80 - Step 4: Simplify right side
221,986.20x = 38,746,331,634.82 - Step 5: Solve for x
x = 38,746,331,634.82/221,986.20 - Step 6: Final answer
x = 174,543.88
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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.