Finding the Fourth Proportional to 328,241.10, 492,514.74 and 128,509.68
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Solution
The fourth proportional to 328,241.10, 492,514.74 and 128,509.68 is: 192,824.46
Step by Step Solution
- Step 1: Write the proportion equation
328,241.10 : 492,514.74 = 128,509.68 : x - Step 2: Convert to fraction form
328,241.10/492,514.74 = 128,509.68/x - Step 3: Cross multiply
328,241.10x = 492,514.74 × 128,509.68 - Step 4: Simplify right side
328,241.10x = 63,292,911,632.68 - Step 5: Solve for x
x = 63,292,911,632.68/328,241.10 - Step 6: Final answer
x = 192,824.46
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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.