Finding the Fourth Proportional to 387,214.21, 534,348.66 and 215,132.95
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Solution
The fourth proportional to 387,214.21, 534,348.66 and 215,132.95 is: 296,879.61
Step by Step Solution
- Step 1: Write the proportion equation
387,214.21 : 534,348.66 = 215,132.95 : x - Step 2: Convert to fraction form
387,214.21/534,348.66 = 215,132.95/x - Step 3: Cross multiply
387,214.21x = 534,348.66 × 215,132.95 - Step 4: Simplify right side
387,214.21x = 114,956,003,554.35 - Step 5: Solve for x
x = 114,956,003,554.35/387,214.21 - Step 6: Final answer
x = 296,879.61
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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.