Finding the Fourth Proportional to 380,893.12, 525,663.68 and 211,182.08
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Solution
The fourth proportional to 380,893.12, 525,663.68 and 211,182.08 is: 291,448.55
Step by Step Solution
- Step 1: Write the proportion equation
380,893.12 : 525,663.68 = 211,182.08 : x - Step 2: Convert to fraction form
380,893.12/525,663.68 = 211,182.08/x - Step 3: Cross multiply
380,893.12x = 525,663.68 × 211,182.08 - Step 4: Simplify right side
380,893.12x = 111,010,749,322.85 - Step 5: Solve for x
x = 111,010,749,322.85/380,893.12 - Step 6: Final answer
x = 291,448.55
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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.