Finding the Fourth Proportional to 207,657.07, 311,511.56 and 81,281.00
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Solution
The fourth proportional to 207,657.07, 311,511.56 and 81,281.00 is: 121,931.66
Step by Step Solution
- Step 1: Write the proportion equation
207,657.07 : 311,511.56 = 81,281.00 : x - Step 2: Convert to fraction form
207,657.07/311,511.56 = 81,281.00/x - Step 3: Cross multiply
207,657.07x = 311,511.56 × 81,281.00 - Step 4: Simplify right side
207,657.07x = 25,319,971,480.73 - Step 5: Solve for x
x = 25,319,971,480.73/207,657.07 - Step 6: Final answer
x = 121,931.66
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.