Finding the Fourth Proportional to 387,619.64, 534,902.64 and 215,536.76
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Solution
The fourth proportional to 387,619.64, 534,902.64 and 215,536.76 is: 297,433.80
Step by Step Solution
- Step 1: Write the proportion equation
387,619.64 : 534,902.64 = 215,536.76 : x - Step 2: Convert to fraction form
387,619.64/534,902.64 = 215,536.76/x - Step 3: Cross multiply
387,619.64x = 534,902.64 × 215,536.76 - Step 4: Simplify right side
387,619.64x = 115,291,181,941.05 - Step 5: Solve for x
x = 115,291,181,941.05/387,619.64 - Step 6: Final answer
x = 297,433.80
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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.