Finding the Fourth Proportional to 319,324.05, 478,986.11 and 129,887.46
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Solution
The fourth proportional to 319,324.05, 478,986.11 and 129,887.46 is: 194,831.20
Step by Step Solution
- Step 1: Write the proportion equation
319,324.05 : 478,986.11 = 129,887.46 : x - Step 2: Convert to fraction form
319,324.05/478,986.11 = 129,887.46/x - Step 3: Cross multiply
319,324.05x = 478,986.11 × 129,887.46 - Step 4: Simplify right side
319,324.05x = 62,214,289,203.18 - Step 5: Solve for x
x = 62,214,289,203.18/319,324.05 - Step 6: Final answer
x = 194,831.20
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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.