Finding the Fourth Proportional to 215,417.36, 297,176.20 and 138,961.12
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Solution
The fourth proportional to 215,417.36, 297,176.20 and 138,961.12 is: 191,701.99
Step by Step Solution
- Step 1: Write the proportion equation
215,417.36 : 297,176.20 = 138,961.12 : x - Step 2: Convert to fraction form
215,417.36/297,176.20 = 138,961.12/x - Step 3: Cross multiply
215,417.36x = 297,176.20 × 138,961.12 - Step 4: Simplify right side
215,417.36x = 41,295,936,410.62 - Step 5: Solve for x
x = 41,295,936,410.62/215,417.36 - Step 6: Final answer
x = 191,701.99
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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.