Finding the Fourth Proportional to 219,631.21, 329,528.81 and 86,604.19
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Solution
The fourth proportional to 219,631.21, 329,528.81 and 86,604.19 is: 129,938.62
Step by Step Solution
- Step 1: Write the proportion equation
219,631.21 : 329,528.81 = 86,604.19 : x - Step 2: Convert to fraction form
219,631.21/329,528.81 = 86,604.19/x - Step 3: Cross multiply
219,631.21x = 329,528.81 × 86,604.19 - Step 4: Simplify right side
219,631.21x = 28,538,575,064.40 - Step 5: Solve for x
x = 28,538,575,064.40/219,631.21 - Step 6: Final answer
x = 129,938.62
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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.