Finding the Fourth Proportional to 275,135.76, 379,703.16 and 154,315.80
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Solution
The fourth proportional to 275,135.76, 379,703.16 and 154,315.80 is: 212,964.67
Step by Step Solution
- Step 1: Write the proportion equation
275,135.76 : 379,703.16 = 154,315.80 : x - Step 2: Convert to fraction form
275,135.76/379,703.16 = 154,315.80/x - Step 3: Cross multiply
275,135.76x = 379,703.16 × 154,315.80 - Step 4: Simplify right side
275,135.76x = 58,594,196,897.93 - Step 5: Solve for x
x = 58,594,196,897.93/275,135.76 - Step 6: Final answer
x = 212,964.67
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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.