Finding the Fourth Proportional to 209,932.76, 314,866.68 and 76,781.88
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Solution
The fourth proportional to 209,932.76, 314,866.68 and 76,781.88 is: 115,160.95
Step by Step Solution
- Step 1: Write the proportion equation
209,932.76 : 314,866.68 = 76,781.88 : x - Step 2: Convert to fraction form
209,932.76/314,866.68 = 76,781.88/x - Step 3: Cross multiply
209,932.76x = 314,866.68 × 76,781.88 - Step 4: Simplify right side
209,932.76x = 24,176,055,639.76 - Step 5: Solve for x
x = 24,176,055,639.76/209,932.76 - Step 6: Final answer
x = 115,160.95
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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.