Finding the Fourth Proportional to 211,938,674.20, 292,478,006.58 and 128,305,694.68
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Solution
The fourth proportional to 211,938,674.20, 292,478,006.58 and 128,305,694.68 is: 177,063,454.58
Step by Step Solution
- Step 1: Write the proportion equation
211,938,674.20 : 292,478,006.58 = 128,305,694.68 : x - Step 2: Convert to fraction form
211,938,674.20/292,478,006.58 = 128,305,694.68/x - Step 3: Cross multiply
211,938,674.20x = 292,478,006.58 × 128,305,694.68 - Step 4: Simplify right side
211,938,674.20x = 37,526,593,812,868,512 - Step 5: Solve for x
x = 37,526,593,812,868,512/211,938,674.20 - Step 6: Final answer
x = 177,063,454.58
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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.