Finding the Fourth Proportional to 232,638,544.72, 321,040,221.60 and 128,216,366.84
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Solution
The fourth proportional to 232,638,544.72, 321,040,221.60 and 128,216,366.84 is: 176,938,051.57
Step by Step Solution
- Step 1: Write the proportion equation
232,638,544.72 : 321,040,221.60 = 128,216,366.84 : x - Step 2: Convert to fraction form
232,638,544.72/321,040,221.60 = 128,216,366.84/x - Step 3: Cross multiply
232,638,544.72x = 321,040,221.60 × 128,216,366.84 - Step 4: Simplify right side
232,638,544.72x = 41,162,610,823,060,496 - Step 5: Solve for x
x = 41,162,610,823,060,496/232,638,544.72 - Step 6: Final answer
x = 176,938,051.57
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1.5x scale
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.