Finding the Fourth Proportional to 286,805.34, 395,775.11 and 159,478.20
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Solution
The fourth proportional to 286,805.34, 395,775.11 and 159,478.20 is: 220,070.88
Step by Step Solution
- Step 1: Write the proportion equation
286,805.34 : 395,775.11 = 159,478.20 : x - Step 2: Convert to fraction form
286,805.34/395,775.11 = 159,478.20/x - Step 3: Cross multiply
286,805.34x = 395,775.11 × 159,478.20 - Step 4: Simplify right side
286,805.34x = 63,117,502,546.30 - Step 5: Solve for x
x = 63,117,502,546.30/286,805.34 - Step 6: Final answer
x = 220,070.88
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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.