Finding the Fourth Proportional to 280,493,817.58, 387,119,918.26 and 161,413,963.92
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Solution
The fourth proportional to 280,493,817.58, 387,119,918.26 and 161,413,963.92 is: 222,773,396.78
Step by Step Solution
- Step 1: Write the proportion equation
280,493,817.58 : 387,119,918.26 = 161,413,963.92 : x - Step 2: Convert to fraction form
280,493,817.58/387,119,918.26 = 161,413,963.92/x - Step 3: Cross multiply
280,493,817.58x = 387,119,918.26 × 161,413,963.92 - Step 4: Simplify right side
280,493,817.58x = 62,486,560,518,732,984 - Step 5: Solve for x
x = 62,486,560,518,732,984/280,493,817.58 - Step 6: Final answer
x = 222,773,396.78
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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.