Finding the Fourth Proportional to 221,290.88, 305,335.62 and 129,392.48
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Solution
The fourth proportional to 221,290.88, 305,335.62 and 129,392.48 is: 178,534.85
Step by Step Solution
- Step 1: Write the proportion equation
221,290.88 : 305,335.62 = 129,392.48 : x - Step 2: Convert to fraction form
221,290.88/305,335.62 = 129,392.48/x - Step 3: Cross multiply
221,290.88x = 305,335.62 × 129,392.48 - Step 4: Simplify right side
221,290.88x = 39,508,133,104.14 - Step 5: Solve for x
x = 39,508,133,104.14/221,290.88 - Step 6: Final answer
x = 178,534.85
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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.