Finding the Fourth Proportional to 259,923.91, 389,899.63 and 72,949.99
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Solution
The fourth proportional to 259,923.91, 389,899.63 and 72,949.99 is: 109,428.84
Step by Step Solution
- Step 1: Write the proportion equation
259,923.91 : 389,899.63 = 72,949.99 : x - Step 2: Convert to fraction form
259,923.91/389,899.63 = 72,949.99/x - Step 3: Cross multiply
259,923.91x = 389,899.63 × 72,949.99 - Step 4: Simplify right side
259,923.91x = 28,443,172,160.01 - Step 5: Solve for x
x = 28,443,172,160.01/259,923.91 - Step 6: Final answer
x = 109,428.84
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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.