Finding the Fourth Proportional to 386,940,481.62, 533,974,147.92 and 210,731,419.62
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Solution
The fourth proportional to 386,940,481.62, 533,974,147.92 and 210,731,419.62 is: 290,807,334.92
Step by Step Solution
- Step 1: Write the proportion equation
386,940,481.62 : 533,974,147.92 = 210,731,419.62 : x - Step 2: Convert to fraction form
386,940,481.62/533,974,147.92 = 210,731,419.62/x - Step 3: Cross multiply
386,940,481.62x = 533,974,147.92 × 210,731,419.62 - Step 4: Simplify right side
386,940,481.62x = 112,525,130,231,561,472 - Step 5: Solve for x
x = 112,525,130,231,561,472/386,940,481.62 - Step 6: Final answer
x = 290,807,334.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.