Finding the Fourth Proportional to 320,228,750.21, 479,794,231.98 and 214,986,985.97
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Solution
The fourth proportional to 320,228,750.21, 479,794,231.98 and 214,986,985.97 is: 322,111,976.99
Step by Step Solution
- Step 1: Write the proportion equation
320,228,750.21 : 479,794,231.98 = 214,986,985.97 : x - Step 2: Convert to fraction form
320,228,750.21/479,794,231.98 = 214,986,985.97/x - Step 3: Cross multiply
320,228,750.21x = 479,794,231.98 × 214,986,985.97 - Step 4: Simplify right side
320,228,750.21x = 103,149,515,816,772,224 - Step 5: Solve for x
x = 103,149,515,816,772,224/320,228,750.21 - Step 6: Final answer
x = 322,111,976.99
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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.