Finding the Fourth Proportional to 211,915,715.28, 292,377,960.84 and 123,746,110.80
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Solution
The fourth proportional to 211,915,715.28, 292,377,960.84 and 123,746,110.80 is: 170,731,252.70
Step by Step Solution
- Step 1: Write the proportion equation
211,915,715.28 : 292,377,960.84 = 123,746,110.80 : x - Step 2: Convert to fraction form
211,915,715.28/292,377,960.84 = 123,746,110.80/x - Step 3: Cross multiply
211,915,715.28x = 292,377,960.84 × 123,746,110.80 - Step 4: Simplify right side
211,915,715.28x = 36,180,635,537,584,696 - Step 5: Solve for x
x = 36,180,635,537,584,696/211,915,715.28 - Step 6: Final answer
x = 170,731,252.70
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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.