Finding the Fourth Proportional to 209,835,268.70, 289,567,557.12 and 115,747,355.58
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Solution
The fourth proportional to 209,835,268.70, 289,567,557.12 and 115,747,355.58 is: 159,728,529.94
Step by Step Solution
- Step 1: Write the proportion equation
209,835,268.70 : 289,567,557.12 = 115,747,355.58 : x - Step 2: Convert to fraction form
209,835,268.70/289,567,557.12 = 115,747,355.58/x - Step 3: Cross multiply
209,835,268.70x = 289,567,557.12 × 115,747,355.58 - Step 4: Simplify right side
209,835,268.70x = 33,516,678,998,400,600 - Step 5: Solve for x
x = 33,516,678,998,400,600/209,835,268.70 - Step 6: Final answer
x = 159,728,529.94
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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.