Finding the Fourth Proportional to 309,548.88, 427,268.70 and 202,135.68
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Solution
The fourth proportional to 309,548.88, 427,268.70 and 202,135.68 is: 279,006.82
Step by Step Solution
- Step 1: Write the proportion equation
309,548.88 : 427,268.70 = 202,135.68 : x - Step 2: Convert to fraction form
309,548.88/427,268.70 = 202,135.68/x - Step 3: Cross multiply
309,548.88x = 427,268.70 × 202,135.68 - Step 4: Simplify right side
309,548.88x = 86,366,249,217.22 - Step 5: Solve for x
x = 86,366,249,217.22/309,548.88 - Step 6: Final answer
x = 279,006.82
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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.