Finding the Fourth Proportional to 281,393.06, 422,156.68 and 91,853.63
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Solution
The fourth proportional to 281,393.06, 422,156.68 and 91,853.63 is: 137,802.34
Step by Step Solution
- Step 1: Write the proportion equation
281,393.06 : 422,156.68 = 91,853.63 : x - Step 2: Convert to fraction form
281,393.06/422,156.68 = 91,853.63/x - Step 3: Cross multiply
281,393.06x = 422,156.68 × 91,853.63 - Step 4: Simplify right side
281,393.06x = 38,776,622,729.42 - Step 5: Solve for x
x = 38,776,622,729.42/281,393.06 - Step 6: Final answer
x = 137,802.34
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.