Finding the Fourth Proportional to 352,759.05, 528,985.49 and 128,044.80
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Solution
The fourth proportional to 352,759.05, 528,985.49 and 128,044.80 is: 192,011.63
Step by Step Solution
- Step 1: Write the proportion equation
352,759.05 : 528,985.49 = 128,044.80 : x - Step 2: Convert to fraction form
352,759.05/528,985.49 = 128,044.80/x - Step 3: Cross multiply
352,759.05x = 528,985.49 × 128,044.80 - Step 4: Simplify right side
352,759.05x = 67,733,840,629.73 - Step 5: Solve for x
x = 67,733,840,629.73/352,759.05 - Step 6: Final answer
x = 192,011.63
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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.