Finding the Fourth Proportional to 232,638,543.10, 321,040,219.36 and 128,216,365.21
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Solution
The fourth proportional to 232,638,543.10, 321,040,219.36 and 128,216,365.21 is: 176,938,049.32
Step by Step Solution
- Step 1: Write the proportion equation
232,638,543.10 : 321,040,219.36 = 128,216,365.21 : x - Step 2: Convert to fraction form
232,638,543.10/321,040,219.36 = 128,216,365.21/x - Step 3: Cross multiply
232,638,543.10x = 321,040,219.36 × 128,216,365.21 - Step 4: Simplify right side
232,638,543.10x = 41,162,610,011,919,192 - Step 5: Solve for x
x = 41,162,610,011,919,192/232,638,543.10 - Step 6: Final answer
x = 176,938,049.32
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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.