Finding the Fourth Proportional to 261,119.52, 391,679.51 and 71,581.95
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Solution
The fourth proportional to 261,119.52, 391,679.51 and 71,581.95 is: 107,372.99
Step by Step Solution
- Step 1: Write the proportion equation
261,119.52 : 391,679.51 = 71,581.95 : x - Step 2: Convert to fraction form
261,119.52/391,679.51 = 71,581.95/x - Step 3: Cross multiply
261,119.52x = 391,679.51 × 71,581.95 - Step 4: Simplify right side
261,119.52x = 28,037,182,742.93 - Step 5: Solve for x
x = 28,037,182,742.93/261,119.52 - Step 6: Final answer
x = 107,372.99
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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.