Finding the Fourth Proportional to 221,685.19, 305,926.77 and 121,083.19
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Solution
The fourth proportional to 221,685.19, 305,926.77 and 121,083.19 is: 167,095.46
Step by Step Solution
- Step 1: Write the proportion equation
221,685.19 : 305,926.77 = 121,083.19 : x - Step 2: Convert to fraction form
221,685.19/305,926.77 = 121,083.19/x - Step 3: Cross multiply
221,685.19x = 305,926.77 × 121,083.19 - Step 4: Simplify right side
221,685.19x = 37,042,588,907.24 - Step 5: Solve for x
x = 37,042,588,907.24/221,685.19 - Step 6: Final answer
x = 167,095.46
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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.