Finding the Fourth Proportional to 389,315.54, 537,268.31 and 225,959.80
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Solution
The fourth proportional to 389,315.54, 537,268.31 and 225,959.80 is: 311,831.99
Step by Step Solution
- Step 1: Write the proportion equation
389,315.54 : 537,268.31 = 225,959.80 : x - Step 2: Convert to fraction form
389,315.54/537,268.31 = 225,959.80/x - Step 3: Cross multiply
389,315.54x = 537,268.31 × 225,959.80 - Step 4: Simplify right side
389,315.54x = 121,401,037,400.97 - Step 5: Solve for x
x = 121,401,037,400.97/389,315.54 - Step 6: Final answer
x = 311,831.99
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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.