Finding the Fourth Proportional to 239,109.24, 329,971.74 and 137,138.64
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Solution
The fourth proportional to 239,109.24, 329,971.74 and 137,138.64 is: 189,251.89
Step by Step Solution
- Step 1: Write the proportion equation
239,109.24 : 329,971.74 = 137,138.64 : x - Step 2: Convert to fraction form
239,109.24/329,971.74 = 137,138.64/x - Step 3: Cross multiply
239,109.24x = 329,971.74 × 137,138.64 - Step 4: Simplify right side
239,109.24x = 45,251,875,662.03 - Step 5: Solve for x
x = 45,251,875,662.03/239,109.24 - Step 6: Final answer
x = 189,251.89
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1.5x scale
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.