Finding the Fourth Proportional to 289,918.80, 434,858.64 and 79,539.12
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Solution
The fourth proportional to 289,918.80, 434,858.64 and 79,539.12 is: 119,303.31
Step by Step Solution
- Step 1: Write the proportion equation
289,918.80 : 434,858.64 = 79,539.12 : x - Step 2: Convert to fraction form
289,918.80/434,858.64 = 79,539.12/x - Step 3: Cross multiply
289,918.80x = 434,858.64 × 79,539.12 - Step 4: Simplify right side
289,918.80x = 34,588,273,550.00 - Step 5: Solve for x
x = 34,588,273,550.00/289,918.80 - Step 6: Final answer
x = 119,303.31
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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.