Finding the Fourth Proportional to 420,238.12, 579,915.84 and 236,486.92
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Solution
The fourth proportional to 420,238.12, 579,915.84 and 236,486.92 is: 326,344.77
Step by Step Solution
- Step 1: Write the proportion equation
420,238.12 : 579,915.84 = 236,486.92 : x - Step 2: Convert to fraction form
420,238.12/579,915.84 = 236,486.92/x - Step 3: Cross multiply
420,238.12x = 579,915.84 × 236,486.92 - Step 4: Simplify right side
420,238.12x = 137,142,510,860.81 - Step 5: Solve for x
x = 137,142,510,860.81/420,238.12 - Step 6: Final answer
x = 326,344.77
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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.