Finding the Fourth Proportional to 381,381.42, 572,164.62 and 115,126.03
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Solution
The fourth proportional to 381,381.42, 572,164.62 and 115,126.03 is: 172,716.96
Step by Step Solution
- Step 1: Write the proportion equation
381,381.42 : 572,164.62 = 115,126.03 : x - Step 2: Convert to fraction form
381,381.42/572,164.62 = 115,126.03/x - Step 3: Cross multiply
381,381.42x = 572,164.62 × 115,126.03 - Step 4: Simplify right side
381,381.42x = 65,871,041,207.06 - Step 5: Solve for x
x = 65,871,041,207.06/381,381.42 - Step 6: Final answer
x = 172,716.96
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.