Finding the Fourth Proportional to 387,307.12, 534,451.80 and 215,230.12
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Solution
The fourth proportional to 387,307.12, 534,451.80 and 215,230.12 is: 296,999.77
Step by Step Solution
- Step 1: Write the proportion equation
387,307.12 : 534,451.80 = 215,230.12 : x - Step 2: Convert to fraction form
387,307.12/534,451.80 = 215,230.12/x - Step 3: Cross multiply
387,307.12x = 534,451.80 × 215,230.12 - Step 4: Simplify right side
387,307.12x = 115,030,125,048.22 - Step 5: Solve for x
x = 115,030,125,048.22/387,307.12 - Step 6: Final answer
x = 296,999.77
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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.