Finding the Fourth Proportional to 320,994,051.21, 443,107,405.67 and 216,713,381.13
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Solution
The fourth proportional to 320,994,051.21, 443,107,405.67 and 216,713,381.13 is: 299,156,023.99
Step by Step Solution
- Step 1: Write the proportion equation
320,994,051.21 : 443,107,405.67 = 216,713,381.13 : x - Step 2: Convert to fraction form
320,994,051.21/443,107,405.67 = 216,713,381.13/x - Step 3: Cross multiply
320,994,051.21x = 443,107,405.67 × 216,713,381.13 - Step 4: Simplify right side
320,994,051.21x = 96,027,304,085,404,672 - Step 5: Solve for x
x = 96,027,304,085,404,672/320,994,051.21 - Step 6: Final answer
x = 299,156,023.99
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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.