Finding the Fourth Proportional to 408,855.32, 613,239.84 and 109,366.13
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Solution
The fourth proportional to 408,855.32, 613,239.84 and 109,366.13 is: 164,037.65
Step by Step Solution
- Step 1: Write the proportion equation
408,855.32 : 613,239.84 = 109,366.13 : x - Step 2: Convert to fraction form
408,855.32/613,239.84 = 109,366.13/x - Step 3: Cross multiply
408,855.32x = 613,239.84 × 109,366.13 - Step 4: Simplify right side
408,855.32x = 67,067,664,996.42 - Step 5: Solve for x
x = 67,067,664,996.42/408,855.32 - Step 6: Final answer
x = 164,037.65
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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.