Finding the Fourth Proportional to 209,724,187.17, 289,543,387.41 and 186,454,931.88
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Solution
The fourth proportional to 209,724,187.17, 289,543,387.41 and 186,454,931.88 is: 257,418,056.09
Step by Step Solution
- Step 1: Write the proportion equation
209,724,187.17 : 289,543,387.41 = 186,454,931.88 : x - Step 2: Convert to fraction form
209,724,187.17/289,543,387.41 = 186,454,931.88/x - Step 3: Cross multiply
209,724,187.17x = 289,543,387.41 × 186,454,931.88 - Step 4: Simplify right side
209,724,187.17x = 53,986,792,575,836,000 - Step 5: Solve for x
x = 53,986,792,575,836,000/209,724,187.17 - Step 6: Final answer
x = 257,418,056.09
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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.