Finding the Fourth Proportional to 212,622.36, 293,419.08 and 117,129.12
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Solution
The fourth proportional to 212,622.36, 293,419.08 and 117,129.12 is: 161,638.31
Step by Step Solution
- Step 1: Write the proportion equation
212,622.36 : 293,419.08 = 117,129.12 : x - Step 2: Convert to fraction form
212,622.36/293,419.08 = 117,129.12/x - Step 3: Cross multiply
212,622.36x = 293,419.08 × 117,129.12 - Step 4: Simplify right side
212,622.36x = 34,367,918,631.61 - Step 5: Solve for x
x = 34,367,918,631.61/212,622.36 - Step 6: Final answer
x = 161,638.31
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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.