Finding the Fourth Proportional to 209,885,819.79, 289,643,437.41 and 115,799,961.99
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Solution
The fourth proportional to 209,885,819.79, 289,643,437.41 and 115,799,961.99 is: 159,804,502.64
Step by Step Solution
- Step 1: Write the proportion equation
209,885,819.79 : 289,643,437.41 = 115,799,961.99 : x - Step 2: Convert to fraction form
209,885,819.79/289,643,437.41 = 115,799,961.99/x - Step 3: Cross multiply
209,885,819.79x = 289,643,437.41 × 115,799,961.99 - Step 4: Simplify right side
209,885,819.79x = 33,540,699,042,730,944 - Step 5: Solve for x
x = 33,540,699,042,730,944/209,885,819.79 - Step 6: Final answer
x = 159,804,502.64
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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.