Finding the Fourth Proportional to 438,137.40, 657,011.70 and 201,358.20
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Solution
The fourth proportional to 438,137.40, 657,011.70 and 201,358.20 is: 301,947.96
Step by Step Solution
- Step 1: Write the proportion equation
438,137.40 : 657,011.70 = 201,358.20 : x - Step 2: Convert to fraction form
438,137.40/657,011.70 = 201,358.20/x - Step 3: Cross multiply
438,137.40x = 657,011.70 × 201,358.20 - Step 4: Simplify right side
438,137.40x = 132,294,693,290.94 - Step 5: Solve for x
x = 132,294,693,290.94/438,137.40 - Step 6: Final answer
x = 301,947.96
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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.