Finding the Fourth Proportional to 228,398.23, 342,620.16 and 78,618.70
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Solution
The fourth proportional to 228,398.23, 342,620.16 and 78,618.70 is: 117,935.90
Step by Step Solution
- Step 1: Write the proportion equation
228,398.23 : 342,620.16 = 78,618.70 : x - Step 2: Convert to fraction form
228,398.23/342,620.16 = 78,618.70/x - Step 3: Cross multiply
228,398.23x = 342,620.16 × 78,618.70 - Step 4: Simplify right side
228,398.23x = 26,936,351,572.99 - Step 5: Solve for x
x = 26,936,351,572.99/228,398.23 - Step 6: Final answer
x = 117,935.90
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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.