Finding the Fourth Proportional to 388,372,132.12, 536,081,266.11 and 309,132,544.42
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Solution
The fourth proportional to 388,372,132.12, 536,081,266.11 and 309,132,544.42 is: 426,704,575.59
Step by Step Solution
- Step 1: Write the proportion equation
388,372,132.12 : 536,081,266.11 = 309,132,544.42 : x - Step 2: Convert to fraction form
388,372,132.12/536,081,266.11 = 309,132,544.42/x - Step 3: Cross multiply
388,372,132.12x = 536,081,266.11 × 309,132,544.42 - Step 4: Simplify right side
388,372,132.12x = 165,720,165,808,562,144 - Step 5: Solve for x
x = 165,720,165,808,562,144/388,372,132.12 - Step 6: Final answer
x = 426,704,575.59
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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.