Finding the Fourth Proportional to 209,380.70, 314,030.99 and 81,296.99
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Solution
The fourth proportional to 209,380.70, 314,030.99 and 81,296.99 is: 121,929.93
Step by Step Solution
- Step 1: Write the proportion equation
209,380.70 : 314,030.99 = 81,296.99 : x - Step 2: Convert to fraction form
209,380.70/314,030.99 = 81,296.99/x - Step 3: Cross multiply
209,380.70x = 314,030.99 × 81,296.99 - Step 4: Simplify right side
209,380.70x = 25,529,774,253.72 - Step 5: Solve for x
x = 25,529,774,253.72/209,380.70 - Step 6: Final answer
x = 121,929.93
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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.