Finding the Fourth Proportional to 307,220.20, 461,121.90 and 189,122.20
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Solution
The fourth proportional to 307,220.20, 461,121.90 and 189,122.20 is: 283,862.81
Step by Step Solution
- Step 1: Write the proportion equation
307,220.20 : 461,121.90 = 189,122.20 : x - Step 2: Convert to fraction form
307,220.20/461,121.90 = 189,122.20/x - Step 3: Cross multiply
307,220.20x = 461,121.90 × 189,122.20 - Step 4: Simplify right side
307,220.20x = 87,208,388,196.18 - Step 5: Solve for x
x = 87,208,388,196.18/307,220.20 - Step 6: Final answer
x = 283,862.81
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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.