Finding the Fourth Proportional to 284,782.12, 392,983.62 and 157,450.12
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Solution
The fourth proportional to 284,782.12, 392,983.62 and 157,450.12 is: 217,272.48
Step by Step Solution
- Step 1: Write the proportion equation
284,782.12 : 392,983.62 = 157,450.12 : x - Step 2: Convert to fraction form
284,782.12/392,983.62 = 157,450.12/x - Step 3: Cross multiply
284,782.12x = 392,983.62 × 157,450.12 - Step 4: Simplify right side
284,782.12x = 61,875,318,127.03 - Step 5: Solve for x
x = 61,875,318,127.03/284,782.12 - Step 6: Final answer
x = 217,272.48
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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.