Finding the Fourth Proportional to 279,810.58, 386,028.99 and 172,193.78
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Solution
The fourth proportional to 279,810.58, 386,028.99 and 172,193.78 is: 237,559.96
Step by Step Solution
- Step 1: Write the proportion equation
279,810.58 : 386,028.99 = 172,193.78 : x - Step 2: Convert to fraction form
279,810.58/386,028.99 = 172,193.78/x - Step 3: Cross multiply
279,810.58x = 386,028.99 × 172,193.78 - Step 4: Simplify right side
279,810.58x = 66,471,790,977.68 - Step 5: Solve for x
x = 66,471,790,977.68/279,810.58 - Step 6: Final answer
x = 237,559.96
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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.