Finding the Fourth Proportional to 380,409.60, 524,958.84 and 210,640.08
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Solution
The fourth proportional to 380,409.60, 524,958.84 and 210,640.08 is: 290,679.76
Step by Step Solution
- Step 1: Write the proportion equation
380,409.60 : 524,958.84 = 210,640.08 : x - Step 2: Convert to fraction form
380,409.60/524,958.84 = 210,640.08/x - Step 3: Cross multiply
380,409.60x = 524,958.84 × 210,640.08 - Step 4: Simplify right side
380,409.60x = 110,577,372,054.31 - Step 5: Solve for x
x = 110,577,372,054.31/380,409.60 - Step 6: Final answer
x = 290,679.76
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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.