Finding the Fourth Proportional to 218,029.14, 300,905.16 and 121,242.66
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Solution
The fourth proportional to 218,029.14, 300,905.16 and 121,242.66 is: 167,328.74
Step by Step Solution
- Step 1: Write the proportion equation
218,029.14 : 300,905.16 = 121,242.66 : x - Step 2: Convert to fraction form
218,029.14/300,905.16 = 121,242.66/x - Step 3: Cross multiply
218,029.14x = 300,905.16 × 121,242.66 - Step 4: Simplify right side
218,029.14x = 36,482,542,006.13 - Step 5: Solve for x
x = 36,482,542,006.13/218,029.14 - Step 6: Final answer
x = 167,328.74
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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.