Finding the Fourth Proportional to 207,905.20, 311,857.80 and 181,661.20
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Solution
The fourth proportional to 207,905.20, 311,857.80 and 181,661.20 is: 272,491.80
Step by Step Solution
- Step 1: Write the proportion equation
207,905.20 : 311,857.80 = 181,661.20 : x - Step 2: Convert to fraction form
207,905.20/311,857.80 = 181,661.20/x - Step 3: Cross multiply
207,905.20x = 311,857.80 × 181,661.20 - Step 4: Simplify right side
207,905.20x = 56,652,462,177.36 - Step 5: Solve for x
x = 56,652,462,177.36/207,905.20 - Step 6: Final answer
x = 272,491.80
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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.