Finding the Fourth Proportional to 212,338.12, 293,038.74 and 121,709.19
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Solution
The fourth proportional to 212,338.12, 293,038.74 and 121,709.19 is: 167,965.64
Step by Step Solution
- Step 1: Write the proportion equation
212,338.12 : 293,038.74 = 121,709.19 : x - Step 2: Convert to fraction form
212,338.12/293,038.74 = 121,709.19/x - Step 3: Cross multiply
212,338.12x = 293,038.74 × 121,709.19 - Step 4: Simplify right side
212,338.12x = 35,665,507,684.02 - Step 5: Solve for x
x = 35,665,507,684.02/212,338.12 - Step 6: Final answer
x = 167,965.64
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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.