Finding the Fourth Proportional to 438,227.16, 657,439.20 and 138,725.70
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Solution
The fourth proportional to 438,227.16, 657,439.20 and 138,725.70 is: 208,119.72
Step by Step Solution
- Step 1: Write the proportion equation
438,227.16 : 657,439.20 = 138,725.70 : x - Step 2: Convert to fraction form
438,227.16/657,439.20 = 138,725.70/x - Step 3: Cross multiply
438,227.16x = 657,439.20 × 138,725.70 - Step 4: Simplify right side
438,227.16x = 91,203,713,227.44 - Step 5: Solve for x
x = 91,203,713,227.44/438,227.16 - Step 6: Final answer
x = 208,119.72
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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.