Finding the Fourth Proportional to 233,115,489.86, 321,690,949.35 and 128,691,323.42
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Solution
The fourth proportional to 233,115,489.86, 321,690,949.35 and 128,691,323.42 is: 177,589,374.39
Step by Step Solution
- Step 1: Write the proportion equation
233,115,489.86 : 321,690,949.35 = 128,691,323.42 : x - Step 2: Convert to fraction form
233,115,489.86/321,690,949.35 = 128,691,323.42/x - Step 3: Cross multiply
233,115,489.86x = 321,690,949.35 × 128,691,323.42 - Step 4: Simplify right side
233,115,489.86x = 41,398,834,004,087,696 - Step 5: Solve for x
x = 41,398,834,004,087,696/233,115,489.86 - Step 6: Final answer
x = 177,589,374.39
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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.