Finding the Fourth Proportional to 209,935.80, 314,135.70 and 154,639.80
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Solution
The fourth proportional to 209,935.80, 314,135.70 and 154,639.80 is: 231,393.99
Step by Step Solution
- Step 1: Write the proportion equation
209,935.80 : 314,135.70 = 154,639.80 : x - Step 2: Convert to fraction form
209,935.80/314,135.70 = 154,639.80/x - Step 3: Cross multiply
209,935.80x = 314,135.70 × 154,639.80 - Step 4: Simplify right side
209,935.80x = 48,577,881,820.86 - Step 5: Solve for x
x = 48,577,881,820.86/209,935.80 - Step 6: Final answer
x = 231,393.99
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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.