Finding the Fourth Proportional to 311,415.19, 429,752.95 and 168,175.23
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Solution
The fourth proportional to 311,415.19, 429,752.95 and 168,175.23 is: 232,081.81
Step by Step Solution
- Step 1: Write the proportion equation
311,415.19 : 429,752.95 = 168,175.23 : x - Step 2: Convert to fraction form
311,415.19/429,752.95 = 168,175.23/x - Step 3: Cross multiply
311,415.19x = 429,752.95 × 168,175.23 - Step 4: Simplify right side
311,415.19x = 72,273,801,209.43 - Step 5: Solve for x
x = 72,273,801,209.43/311,415.19 - Step 6: Final answer
x = 232,081.81
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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.