Finding the Fourth Proportional to 307,616.20, 461,424.30 and 213,137.80
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Solution
The fourth proportional to 307,616.20, 461,424.30 and 213,137.80 is: 319,706.70
Step by Step Solution
- Step 1: Write the proportion equation
307,616.20 : 461,424.30 = 213,137.80 : x - Step 2: Convert to fraction form
307,616.20/461,424.30 = 213,137.80/x - Step 3: Cross multiply
307,616.20x = 461,424.30 × 213,137.80 - Step 4: Simplify right side
307,616.20x = 98,346,960,168.54 - Step 5: Solve for x
x = 98,346,960,168.54/307,616.20 - Step 6: Final answer
x = 319,706.70
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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.