Finding the Fourth Proportional to 686,108.10, 1,029,162.15 and 212,841.30
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Solution
The fourth proportional to 686,108.10, 1,029,162.15 and 212,841.30 is: 319,261.95
Step by Step Solution
- Step 1: Write the proportion equation
686,108.10 : 1,029,162.15 = 212,841.30 : x - Step 2: Convert to fraction form
686,108.10/1,029,162.15 = 212,841.30/x - Step 3: Cross multiply
686,108.10x = 1,029,162.15 × 212,841.30 - Step 4: Simplify right side
686,108.10x = 219,048,209,916.80 - Step 5: Solve for x
x = 219,048,209,916.80/686,108.10 - Step 6: Final answer
x = 319,261.95
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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.