Finding the Fourth Proportional to 268,853.13, 403,279.70 and 81,864.63
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Solution
The fourth proportional to 268,853.13, 403,279.70 and 81,864.63 is: 122,796.95
Step by Step Solution
- Step 1: Write the proportion equation
268,853.13 : 403,279.70 = 81,864.63 : x - Step 2: Convert to fraction form
268,853.13/403,279.70 = 81,864.63/x - Step 3: Cross multiply
268,853.13x = 403,279.70 × 81,864.63 - Step 4: Simplify right side
268,853.13x = 33,014,343,427.01 - Step 5: Solve for x
x = 33,014,343,427.01/268,853.13 - Step 6: Final answer
x = 122,796.95
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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.