Finding the Fourth Proportional to 268,752.20, 403,128.30 and 91,305.80
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Solution
The fourth proportional to 268,752.20, 403,128.30 and 91,305.80 is: 136,958.70
Step by Step Solution
- Step 1: Write the proportion equation
268,752.20 : 403,128.30 = 91,305.80 : x - Step 2: Convert to fraction form
268,752.20/403,128.30 = 91,305.80/x - Step 3: Cross multiply
268,752.20x = 403,128.30 × 91,305.80 - Step 4: Simplify right side
268,752.20x = 36,807,951,934.14 - Step 5: Solve for x
x = 36,807,951,934.14/268,752.20 - Step 6: Final answer
x = 136,958.70
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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.