Finding the Fourth Proportional to 209,832,788.19, 289,569,526.65 and 115,744,812.75
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Solution
The fourth proportional to 209,832,788.19, 289,569,526.65 and 115,744,812.75 is: 159,727,995.46
Step by Step Solution
- Step 1: Write the proportion equation
209,832,788.19 : 289,569,526.65 = 115,744,812.75 : x - Step 2: Convert to fraction form
209,832,788.19/289,569,526.65 = 115,744,812.75/x - Step 3: Cross multiply
209,832,788.19x = 289,569,526.65 × 115,744,812.75 - Step 4: Simplify right side
209,832,788.19x = 33,516,170,640,210,384 - Step 5: Solve for x
x = 33,516,170,640,210,384/209,832,788.19 - Step 6: Final answer
x = 159,727,995.46
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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.