Finding the Fourth Proportional to 411,419.20, 617,128.80 and 201,467.20
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Solution
The fourth proportional to 411,419.20, 617,128.80 and 201,467.20 is: 302,200.80
Step by Step Solution
- Step 1: Write the proportion equation
411,419.20 : 617,128.80 = 201,467.20 : x - Step 2: Convert to fraction form
411,419.20/617,128.80 = 201,467.20/x - Step 3: Cross multiply
411,419.20x = 617,128.80 × 201,467.20 - Step 4: Simplify right side
411,419.20x = 124,331,211,375.36 - Step 5: Solve for x
x = 124,331,211,375.36/411,419.20 - Step 6: Final answer
x = 302,200.80
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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.