Finding the Fourth Proportional to 283,720.51, 391,536.99 and 156,400.66
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Solution
The fourth proportional to 283,720.51, 391,536.99 and 156,400.66 is: 215,834.39
Step by Step Solution
- Step 1: Write the proportion equation
283,720.51 : 391,536.99 = 156,400.66 : x - Step 2: Convert to fraction form
283,720.51/391,536.99 = 156,400.66/x - Step 3: Cross multiply
283,720.51x = 391,536.99 × 156,400.66 - Step 4: Simplify right side
283,720.51x = 61,236,643,650.41 - Step 5: Solve for x
x = 61,236,643,650.41/283,720.51 - Step 6: Final answer
x = 215,834.39
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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.