Finding the Fourth Proportional to 209,218,113.62, 288,600,769.42 and 130,765,513.94
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Solution
The fourth proportional to 209,218,113.62, 288,600,769.42 and 130,765,513.94 is: 180,381,264.71
Step by Step Solution
- Step 1: Write the proportion equation
209,218,113.62 : 288,600,769.42 = 130,765,513.94 : x - Step 2: Convert to fraction form
209,218,113.62/288,600,769.42 = 130,765,513.94/x - Step 3: Cross multiply
209,218,113.62x = 288,600,769.42 × 130,765,513.94 - Step 4: Simplify right side
209,218,113.62x = 37,739,027,934,915,824 - Step 5: Solve for x
x = 37,739,027,934,915,824/209,218,113.62 - Step 6: Final answer
x = 180,381,264.71
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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.