Finding the Fourth Proportional to 386,446.53, 579,767.91 and 120,209.05
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Solution
The fourth proportional to 386,446.53, 579,767.91 and 120,209.05 is: 180,344.09
Step by Step Solution
- Step 1: Write the proportion equation
386,446.53 : 579,767.91 = 120,209.05 : x - Step 2: Convert to fraction form
386,446.53/579,767.91 = 120,209.05/x - Step 3: Cross multiply
386,446.53x = 579,767.91 × 120,209.05 - Step 4: Simplify right side
386,446.53x = 69,693,349,681.59 - Step 5: Solve for x
x = 69,693,349,681.59/386,446.53 - Step 6: Final answer
x = 180,344.09
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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.