Finding the Fourth Proportional to 291,202.80, 436,804.20 and 172,813.20
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Solution
The fourth proportional to 291,202.80, 436,804.20 and 172,813.20 is: 259,219.80
Step by Step Solution
- Step 1: Write the proportion equation
291,202.80 : 436,804.20 = 172,813.20 : x - Step 2: Convert to fraction form
291,202.80/436,804.20 = 172,813.20/x - Step 3: Cross multiply
291,202.80x = 436,804.20 × 172,813.20 - Step 4: Simplify right side
291,202.80x = 75,485,531,575.44 - Step 5: Solve for x
x = 75,485,531,575.44/291,202.80 - Step 6: Final answer
x = 259,219.80
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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.