Finding the Fourth Proportional to 189,808.97, 261,976.43 and 157,946.81
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Solution
The fourth proportional to 189,808.97, 261,976.43 and 157,946.81 is: 217,999.92
Step by Step Solution
- Step 1: Write the proportion equation
189,808.97 : 261,976.43 = 157,946.81 : x - Step 2: Convert to fraction form
189,808.97/261,976.43 = 157,946.81/x - Step 3: Cross multiply
189,808.97x = 261,976.43 × 157,946.81 - Step 4: Simplify right side
189,808.97x = 41,378,340,623.95 - Step 5: Solve for x
x = 41,378,340,623.95/189,808.97 - Step 6: Final answer
x = 217,999.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.