Finding the Fourth Proportional to 238,347.86, 328,918.64 and 129,450.97
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Solution
The fourth proportional to 238,347.86, 328,918.64 and 129,450.97 is: 178,641.58
Step by Step Solution
- Step 1: Write the proportion equation
238,347.86 : 328,918.64 = 129,450.97 : x - Step 2: Convert to fraction form
238,347.86/328,918.64 = 129,450.97/x - Step 3: Cross multiply
238,347.86x = 328,918.64 × 129,450.97 - Step 4: Simplify right side
238,347.86x = 42,578,836,762.97 - Step 5: Solve for x
x = 42,578,836,762.97/238,347.86 - Step 6: Final answer
x = 178,641.58
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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.