Finding the Fourth Proportional to 221,943.50, 306,283.11 and 121,341.50
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Solution
The fourth proportional to 221,943.50, 306,283.11 and 121,341.50 is: 167,451.86
Step by Step Solution
- Step 1: Write the proportion equation
221,943.50 : 306,283.11 = 121,341.50 : x - Step 2: Convert to fraction form
221,943.50/306,283.11 = 121,341.50/x - Step 3: Cross multiply
221,943.50x = 306,283.11 × 121,341.50 - Step 4: Simplify right side
221,943.50x = 37,164,851,992.07 - Step 5: Solve for x
x = 37,164,851,992.07/221,943.50 - Step 6: Final answer
x = 167,451.86
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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.