Finding the Fourth Proportional to 261,602.10, 391,625.55 and 172,955.70
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Solution
The fourth proportional to 261,602.10, 391,625.55 and 172,955.70 is: 258,919.45
Step by Step Solution
- Step 1: Write the proportion equation
261,602.10 : 391,625.55 = 172,955.70 : x - Step 2: Convert to fraction form
261,602.10/391,625.55 = 172,955.70/x - Step 3: Cross multiply
261,602.10x = 391,625.55 × 172,955.70 - Step 4: Simplify right side
261,602.10x = 67,733,871,138.14 - Step 5: Solve for x
x = 67,733,871,138.14/261,602.10 - Step 6: Final answer
x = 258,919.45
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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.