Finding the Fourth Proportional to 343,747.80, 515,621.70 and 320,419.80
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Solution
The fourth proportional to 343,747.80, 515,621.70 and 320,419.80 is: 480,629.70
Step by Step Solution
- Step 1: Write the proportion equation
343,747.80 : 515,621.70 = 320,419.80 : x - Step 2: Convert to fraction form
343,747.80/515,621.70 = 320,419.80/x - Step 3: Cross multiply
343,747.80x = 515,621.70 × 320,419.80 - Step 4: Simplify right side
343,747.80x = 165,215,401,989.66 - Step 5: Solve for x
x = 165,215,401,989.66/343,747.80 - Step 6: Final answer
x = 480,629.70
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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.