Finding the Fourth Proportional to 438,138.40, 657,013.20 and 201,359.20
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Solution
The fourth proportional to 438,138.40, 657,013.20 and 201,359.20 is: 301,949.46
Step by Step Solution
- Step 1: Write the proportion equation
438,138.40 : 657,013.20 = 201,359.20 : x - Step 2: Convert to fraction form
438,138.40/657,013.20 = 201,359.20/x - Step 3: Cross multiply
438,138.40x = 657,013.20 × 201,359.20 - Step 4: Simplify right side
438,138.40x = 132,295,652,341.44 - Step 5: Solve for x
x = 132,295,652,341.44/438,138.40 - Step 6: Final answer
x = 301,949.46
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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.