Finding the Fourth Proportional to 219,043.70, 328,322.55 and 85,879.70
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Solution
The fourth proportional to 219,043.70, 328,322.55 and 85,879.70 is: 128,724.28
Step by Step Solution
- Step 1: Write the proportion equation
219,043.70 : 328,322.55 = 85,879.70 : x - Step 2: Convert to fraction form
219,043.70/328,322.55 = 85,879.70/x - Step 3: Cross multiply
219,043.70x = 328,322.55 × 85,879.70 - Step 4: Simplify right side
219,043.70x = 28,196,242,097.24 - Step 5: Solve for x
x = 28,196,242,097.24/219,043.70 - Step 6: Final answer
x = 128,724.28
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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.