Finding the Fourth Proportional to 345,820.66, 518,776.35 and 135,431.26
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Solution
The fourth proportional to 345,820.66, 518,776.35 and 135,431.26 is: 203,164.65
Step by Step Solution
- Step 1: Write the proportion equation
345,820.66 : 518,776.35 = 135,431.26 : x - Step 2: Convert to fraction form
345,820.66/518,776.35 = 135,431.26/x - Step 3: Cross multiply
345,820.66x = 518,776.35 × 135,431.26 - Step 4: Simplify right side
345,820.66x = 70,258,534,738.70 - Step 5: Solve for x
x = 70,258,534,738.70/345,820.66 - Step 6: Final answer
x = 203,164.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.