Finding the Fourth Proportional to 258,403.41, 356,553.36 and 143,678.79
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Solution
The fourth proportional to 258,403.41, 356,553.36 and 143,678.79 is: 198,252.63
Step by Step Solution
- Step 1: Write the proportion equation
258,403.41 : 356,553.36 = 143,678.79 : x - Step 2: Convert to fraction form
258,403.41/356,553.36 = 143,678.79/x - Step 3: Cross multiply
258,403.41x = 356,553.36 × 143,678.79 - Step 4: Simplify right side
258,403.41x = 51,229,155,335.23 - Step 5: Solve for x
x = 51,229,155,335.23/258,403.41 - Step 6: Final answer
x = 198,252.63
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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.