Finding the Fourth Proportional to 303,420.80, 455,131.20 and 103,747.70
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Solution
The fourth proportional to 303,420.80, 455,131.20 and 103,747.70 is: 155,621.55
Step by Step Solution
- Step 1: Write the proportion equation
303,420.80 : 455,131.20 = 103,747.70 : x - Step 2: Convert to fraction form
303,420.80/455,131.20 = 103,747.70/x - Step 3: Cross multiply
303,420.80x = 455,131.20 × 103,747.70 - Step 4: Simplify right side
303,420.80x = 47,218,815,198.24 - Step 5: Solve for x
x = 47,218,815,198.24/303,420.80 - Step 6: Final answer
x = 155,621.55
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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.