Finding the Fourth Proportional to 216,919.98, 299,335.50 and 121,425.84
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Solution
The fourth proportional to 216,919.98, 299,335.50 and 121,425.84 is: 167,559.78
Step by Step Solution
- Step 1: Write the proportion equation
216,919.98 : 299,335.50 = 121,425.84 : x - Step 2: Convert to fraction form
216,919.98/299,335.50 = 121,425.84/x - Step 3: Cross multiply
216,919.98x = 299,335.50 × 121,425.84 - Step 4: Simplify right side
216,919.98x = 36,347,064,529.32 - Step 5: Solve for x
x = 36,347,064,529.32/216,919.98 - Step 6: Final answer
x = 167,559.78
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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.