Finding the Fourth Proportional to 209,283.91, 313,918.82 and 90,955.26
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Solution
The fourth proportional to 209,283.91, 313,918.82 and 90,955.26 is: 136,429.82
Step by Step Solution
- Step 1: Write the proportion equation
209,283.91 : 313,918.82 = 90,955.26 : x - Step 2: Convert to fraction form
209,283.91/313,918.82 = 90,955.26/x - Step 3: Cross multiply
209,283.91x = 313,918.82 × 90,955.26 - Step 4: Simplify right side
209,283.91x = 28,552,565,867.62 - Step 5: Solve for x
x = 28,552,565,867.62/209,283.91 - Step 6: Final answer
x = 136,429.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.