Finding the Fourth Proportional to 221,026.68, 305,008.62 and 135,129.52
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Solution
The fourth proportional to 221,026.68, 305,008.62 and 135,129.52 is: 186,473.73
Step by Step Solution
- Step 1: Write the proportion equation
221,026.68 : 305,008.62 = 135,129.52 : x - Step 2: Convert to fraction form
221,026.68/305,008.62 = 135,129.52/x - Step 3: Cross multiply
221,026.68x = 305,008.62 × 135,129.52 - Step 4: Simplify right side
221,026.68x = 41,215,668,416.46 - Step 5: Solve for x
x = 41,215,668,416.46/221,026.68 - Step 6: Final answer
x = 186,473.73
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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.