Finding the Fourth Proportional to 272,570.36, 408,939.28 and 139,543.99
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Solution
The fourth proportional to 272,570.36, 408,939.28 and 139,543.99 is: 209,358.85
Step by Step Solution
- Step 1: Write the proportion equation
272,570.36 : 408,939.28 = 139,543.99 : x - Step 2: Convert to fraction form
272,570.36/408,939.28 = 139,543.99/x - Step 3: Cross multiply
272,570.36x = 408,939.28 × 139,543.99 - Step 4: Simplify right side
272,570.36x = 57,065,017,427.72 - Step 5: Solve for x
x = 57,065,017,427.72/272,570.36 - Step 6: Final answer
x = 209,358.85
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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.