Finding the Fourth Proportional to 201,985.80, 302,978.70 and 68,821.80
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Solution
The fourth proportional to 201,985.80, 302,978.70 and 68,821.80 is: 103,232.70
Step by Step Solution
- Step 1: Write the proportion equation
201,985.80 : 302,978.70 = 68,821.80 : x - Step 2: Convert to fraction form
201,985.80/302,978.70 = 68,821.80/x - Step 3: Cross multiply
201,985.80x = 302,978.70 × 68,821.80 - Step 4: Simplify right side
201,985.80x = 20,851,539,495.66 - Step 5: Solve for x
x = 20,851,539,495.66/201,985.80 - Step 6: Final answer
x = 103,232.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.