Finding the Fourth Proportional to 310,299.19, 428,218.55 and 172,491.05
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Solution
The fourth proportional to 310,299.19, 428,218.55 and 172,491.05 is: 238,040.80
Step by Step Solution
- Step 1: Write the proportion equation
310,299.19 : 428,218.55 = 172,491.05 : x - Step 2: Convert to fraction form
310,299.19/428,218.55 = 172,491.05/x - Step 3: Cross multiply
310,299.19x = 428,218.55 × 172,491.05 - Step 4: Simplify right side
310,299.19x = 73,863,868,173.91 - Step 5: Solve for x
x = 73,863,868,173.91/310,299.19 - Step 6: Final answer
x = 238,040.80
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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.