Finding the Fourth Proportional to 235,499.36, 324,987.54 and 128,069.13
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Solution
The fourth proportional to 235,499.36, 324,987.54 and 128,069.13 is: 176,734.54
Step by Step Solution
- Step 1: Write the proportion equation
235,499.36 : 324,987.54 = 128,069.13 : x - Step 2: Convert to fraction form
235,499.36/324,987.54 = 128,069.13/x - Step 3: Cross multiply
235,499.36x = 324,987.54 × 128,069.13 - Step 4: Simplify right side
235,499.36x = 41,620,871,508.64 - Step 5: Solve for x
x = 41,620,871,508.64/235,499.36 - Step 6: Final answer
x = 176,734.54
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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.