Finding the Fourth Proportional to 291,239.20, 436,858.80 and 192,743.20
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Solution
The fourth proportional to 291,239.20, 436,858.80 and 192,743.20 is: 289,114.80
Step by Step Solution
- Step 1: Write the proportion equation
291,239.20 : 436,858.80 = 192,743.20 : x - Step 2: Convert to fraction form
291,239.20/436,858.80 = 192,743.20/x - Step 3: Cross multiply
291,239.20x = 436,858.80 × 192,743.20 - Step 4: Simplify right side
291,239.20x = 84,201,563,060.16 - Step 5: Solve for x
x = 84,201,563,060.16/291,239.20 - Step 6: Final answer
x = 289,114.80
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1.5x scale
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.