Finding the Fourth Proportional to 281,235,372.84, 388,107,918.72 and 155,789,490.24
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Solution
The fourth proportional to 281,235,372.84, 388,107,918.72 and 155,789,490.24 is: 214,991,216.09
Step by Step Solution
- Step 1: Write the proportion equation
281,235,372.84 : 388,107,918.72 = 155,789,490.24 : x - Step 2: Convert to fraction form
281,235,372.84/388,107,918.72 = 155,789,490.24/x - Step 3: Cross multiply
281,235,372.84x = 388,107,918.72 × 155,789,490.24 - Step 4: Simplify right side
281,235,372.84x = 60,463,134,815,496,160 - Step 5: Solve for x
x = 60,463,134,815,496,160/281,235,372.84 - Step 6: Final answer
x = 214,991,216.09
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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.