Finding the Fourth Proportional to 280,877.68, 387,566.40 and 160,021.36
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Solution
The fourth proportional to 280,877.68, 387,566.40 and 160,021.36 is: 220,803.95
Step by Step Solution
- Step 1: Write the proportion equation
280,877.68 : 387,566.40 = 160,021.36 : x - Step 2: Convert to fraction form
280,877.68/387,566.40 = 160,021.36/x - Step 3: Cross multiply
280,877.68x = 387,566.40 × 160,021.36 - Step 4: Simplify right side
280,877.68x = 62,018,902,418.30 - Step 5: Solve for x
x = 62,018,902,418.30/280,877.68 - Step 6: Final answer
x = 220,803.95
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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.