Finding the Fourth Proportional to 209,214.70, 313,822.05 and 68,955.10
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Solution
The fourth proportional to 209,214.70, 313,822.05 and 68,955.10 is: 103,432.65
Step by Step Solution
- Step 1: Write the proportion equation
209,214.70 : 313,822.05 = 68,955.10 : x - Step 2: Convert to fraction form
209,214.70/313,822.05 = 68,955.10/x - Step 3: Cross multiply
209,214.70x = 313,822.05 × 68,955.10 - Step 4: Simplify right side
209,214.70x = 21,639,630,839.96 - Step 5: Solve for x
x = 21,639,630,839.96/209,214.70 - Step 6: Final answer
x = 103,432.65
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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.