Finding the Fourth Proportional to 197,321.97, 272,395.41 and 115,638.94
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Solution
The fourth proportional to 197,321.97, 272,395.41 and 115,638.94 is: 159,635.12
Step by Step Solution
- Step 1: Write the proportion equation
197,321.97 : 272,395.41 = 115,638.94 : x - Step 2: Convert to fraction form
197,321.97/272,395.41 = 115,638.94/x - Step 3: Cross multiply
197,321.97x = 272,395.41 × 115,638.94 - Step 4: Simplify right side
197,321.97x = 31,499,516,380.11 - Step 5: Solve for x
x = 31,499,516,380.11/197,321.97 - Step 6: Final answer
x = 159,635.12
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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.