Finding the Fourth Proportional to 342,212.80, 512,973.60 and 155,358.40
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Solution
The fourth proportional to 342,212.80, 512,973.60 and 155,358.40 is: 232,880.70
Step by Step Solution
- Step 1: Write the proportion equation
342,212.80 : 512,973.60 = 155,358.40 : x - Step 2: Convert to fraction form
342,212.80/512,973.60 = 155,358.40/x - Step 3: Cross multiply
342,212.80x = 512,973.60 × 155,358.40 - Step 4: Simplify right side
342,212.80x = 79,694,757,738.24 - Step 5: Solve for x
x = 79,694,757,738.24/342,212.80 - Step 6: Final answer
x = 232,880.70
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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.