Finding the Fourth Proportional to 201,852.25, 302,780.68 and 86,431.19
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Solution
The fourth proportional to 201,852.25, 302,780.68 and 86,431.19 is: 129,647.77
Step by Step Solution
- Step 1: Write the proportion equation
201,852.25 : 302,780.68 = 86,431.19 : x - Step 2: Convert to fraction form
201,852.25/302,780.68 = 86,431.19/x - Step 3: Cross multiply
201,852.25x = 302,780.68 × 86,431.19 - Step 4: Simplify right side
201,852.25x = 26,169,692,751.43 - Step 5: Solve for x
x = 26,169,692,751.43/201,852.25 - Step 6: Final answer
x = 129,647.77
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.