Finding the Fourth Proportional to 380,136.42, 524,460.09 and 218,987.31
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Solution
The fourth proportional to 380,136.42, 524,460.09 and 218,987.31 is: 302,128.65
Step by Step Solution
- Step 1: Write the proportion equation
380,136.42 : 524,460.09 = 218,987.31 : x - Step 2: Convert to fraction form
380,136.42/524,460.09 = 218,987.31/x - Step 3: Cross multiply
380,136.42x = 524,460.09 × 218,987.31 - Step 4: Simplify right side
380,136.42x = 114,850,104,311.46 - Step 5: Solve for x
x = 114,850,104,311.46/380,136.42 - Step 6: Final answer
x = 302,128.65
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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.