Finding the Fourth Proportional to 209,999.99, 314,901.47 and 76,787.09
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Solution
The fourth proportional to 209,999.99, 314,901.47 and 76,787.09 is: 115,144.61
Step by Step Solution
- Step 1: Write the proportion equation
209,999.99 : 314,901.47 = 76,787.09 : x - Step 2: Convert to fraction form
209,999.99/314,901.47 = 76,787.09/x - Step 3: Cross multiply
209,999.99x = 314,901.47 × 76,787.09 - Step 4: Simplify right side
209,999.99x = 24,180,367,316.36 - Step 5: Solve for x
x = 24,180,367,316.36/209,999.99 - Step 6: Final answer
x = 115,144.61
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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.