Finding the Fourth Proportional to 272,415.80, 408,623.70 and 209,357.30
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Solution
The fourth proportional to 272,415.80, 408,623.70 and 209,357.30 is: 314,035.95
Step by Step Solution
- Step 1: Write the proportion equation
272,415.80 : 408,623.70 = 209,357.30 : x - Step 2: Convert to fraction form
272,415.80/408,623.70 = 209,357.30/x - Step 3: Cross multiply
272,415.80x = 408,623.70 × 209,357.30 - Step 4: Simplify right side
272,415.80x = 85,548,354,548.01 - Step 5: Solve for x
x = 85,548,354,548.01/272,415.80 - Step 6: Final answer
x = 314,035.95
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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.