Finding the Fourth Proportional to 312,258,302.56, 430,775,145.84 and 188,459,405.92
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Solution
The fourth proportional to 312,258,302.56, 430,775,145.84 and 188,459,405.92 is: 259,988,693.35
Step by Step Solution
- Step 1: Write the proportion equation
312,258,302.56 : 430,775,145.84 = 188,459,405.92 : x - Step 2: Convert to fraction form
312,258,302.56/430,775,145.84 = 188,459,405.92/x - Step 3: Cross multiply
312,258,302.56x = 430,775,145.84 × 188,459,405.92 - Step 4: Simplify right side
312,258,302.56x = 81,183,628,070,107,744 - Step 5: Solve for x
x = 81,183,628,070,107,744/312,258,302.56 - Step 6: Final answer
x = 259,988,693.35
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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.