Finding the Fourth Proportional to 438,478.36, 657,735.84 and 138,952.32
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Solution
The fourth proportional to 438,478.36, 657,735.84 and 138,952.32 is: 208,434.28
Step by Step Solution
- Step 1: Write the proportion equation
438,478.36 : 657,735.84 = 138,952.32 : x - Step 2: Convert to fraction form
438,478.36/657,735.84 = 138,952.32/x - Step 3: Cross multiply
438,478.36x = 657,735.84 × 138,952.32 - Step 4: Simplify right side
438,478.36x = 91,393,920,915.15 - Step 5: Solve for x
x = 91,393,920,915.15/438,478.36 - Step 6: Final answer
x = 208,434.28
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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.