Finding the Fourth Proportional to 420,220.74, 579,902.58 and 229,232.46
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Solution
The fourth proportional to 420,220.74, 579,902.58 and 229,232.46 is: 316,339.68
Step by Step Solution
- Step 1: Write the proportion equation
420,220.74 : 579,902.58 = 229,232.46 : x - Step 2: Convert to fraction form
420,220.74/579,902.58 = 229,232.46/x - Step 3: Cross multiply
420,220.74x = 579,902.58 × 229,232.46 - Step 4: Simplify right side
420,220.74x = 132,932,494,973.75 - Step 5: Solve for x
x = 132,932,494,973.75/420,220.74 - Step 6: Final answer
x = 316,339.68
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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.