Finding the Fourth Proportional to 328,392.21, 491,699.93 and 170,288.31
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Solution
The fourth proportional to 328,392.21, 491,699.93 and 170,288.31 is: 254,971.79
Step by Step Solution
- Step 1: Write the proportion equation
328,392.21 : 491,699.93 = 170,288.31 : x - Step 2: Convert to fraction form
328,392.21/491,699.93 = 170,288.31/x - Step 3: Cross multiply
328,392.21x = 491,699.93 × 170,288.31 - Step 4: Simplify right side
328,392.21x = 83,730,749,255.38 - Step 5: Solve for x
x = 83,730,749,255.38/328,392.21 - Step 6: Final answer
x = 254,971.79
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1.5x scale
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.