Finding the Fourth Proportional to 281,146.41, 387,991.71 and 153,821.99
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Solution
The fourth proportional to 281,146.41, 387,991.71 and 153,821.99 is: 212,279.63
Step by Step Solution
- Step 1: Write the proportion equation
281,146.41 : 387,991.71 = 153,821.99 : x - Step 2: Convert to fraction form
281,146.41/387,991.71 = 153,821.99/x - Step 3: Cross multiply
281,146.41x = 387,991.71 × 153,821.99 - Step 4: Simplify right side
281,146.41x = 59,681,654,995.74 - Step 5: Solve for x
x = 59,681,654,995.74/281,146.41 - Step 6: Final answer
x = 212,279.63
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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.