Finding the Fourth Proportional to 208,988,404.19, 288,386,940.36 and 123,045,378.70
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Solution
The fourth proportional to 208,988,404.19, 288,386,940.36 and 123,045,378.70 is: 169,792,579.76
Step by Step Solution
- Step 1: Write the proportion equation
208,988,404.19 : 288,386,940.36 = 123,045,378.70 : x - Step 2: Convert to fraction form
208,988,404.19/288,386,940.36 = 123,045,378.70/x - Step 3: Cross multiply
208,988,404.19x = 288,386,940.36 × 123,045,378.70 - Step 4: Simplify right side
208,988,404.19x = 35,484,680,288,493,880 - Step 5: Solve for x
x = 35,484,680,288,493,880/208,988,404.19 - Step 6: Final answer
x = 169,792,579.76
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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.