Finding the Fourth Proportional to 276,626.68, 381,781.19 and 155,791.59
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Solution
The fourth proportional to 276,626.68, 381,781.19 and 155,791.59 is: 215,012.88
Step by Step Solution
- Step 1: Write the proportion equation
276,626.68 : 381,781.19 = 155,791.59 : x - Step 2: Convert to fraction form
276,626.68/381,781.19 = 155,791.59/x - Step 3: Cross multiply
276,626.68x = 381,781.19 × 155,791.59 - Step 4: Simplify right side
276,626.68x = 59,478,298,622.19 - Step 5: Solve for x
x = 59,478,298,622.19/276,626.68 - Step 6: Final answer
x = 215,012.88
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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.