Finding the Fourth Proportional to 438,107.60, 657,161.40 and 201,911.60
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Solution
The fourth proportional to 438,107.60, 657,161.40 and 201,911.60 is: 302,867.40
Step by Step Solution
- Step 1: Write the proportion equation
438,107.60 : 657,161.40 = 201,911.60 : x - Step 2: Convert to fraction form
438,107.60/657,161.40 = 201,911.60/x - Step 3: Cross multiply
438,107.60x = 657,161.40 × 201,911.60 - Step 4: Simplify right side
438,107.60x = 132,688,509,732.24 - Step 5: Solve for x
x = 132,688,509,732.24/438,107.60 - Step 6: Final answer
x = 302,867.40
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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.