Finding the Fourth Proportional to 233,115,488.36, 321,690,947.28 and 128,691,321.92
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Solution
The fourth proportional to 233,115,488.36, 321,690,947.28 and 128,691,321.92 is: 177,589,372.32
Step by Step Solution
- Step 1: Write the proportion equation
233,115,488.36 : 321,690,947.28 = 128,691,321.92 : x - Step 2: Convert to fraction form
233,115,488.36/321,690,947.28 = 128,691,321.92/x - Step 3: Cross multiply
233,115,488.36x = 321,690,947.28 × 128,691,321.92 - Step 4: Simplify right side
233,115,488.36x = 41,398,833,255,160,224 - Step 5: Solve for x
x = 41,398,833,255,160,224/233,115,488.36 - Step 6: Final answer
x = 177,589,372.32
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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.