Finding the Fourth Proportional to 235,679.79, 325,239.18 and 128,249.10
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Solution
The fourth proportional to 235,679.79, 325,239.18 and 128,249.10 is: 176,984.34
Step by Step Solution
- Step 1: Write the proportion equation
235,679.79 : 325,239.18 = 128,249.10 : x - Step 2: Convert to fraction form
235,679.79/325,239.18 = 128,249.10/x - Step 3: Cross multiply
235,679.79x = 325,239.18 × 128,249.10 - Step 4: Simplify right side
235,679.79x = 41,711,632,119.74 - Step 5: Solve for x
x = 41,711,632,119.74/235,679.79 - Step 6: Final answer
x = 176,984.34
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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.