Finding the Fourth Proportional to 321,987.60, 482,981.40 and 202,237.20
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Solution
The fourth proportional to 321,987.60, 482,981.40 and 202,237.20 is: 303,355.80
Step by Step Solution
- Step 1: Write the proportion equation
321,987.60 : 482,981.40 = 202,237.20 : x - Step 2: Convert to fraction form
321,987.60/482,981.40 = 202,237.20/x - Step 3: Cross multiply
321,987.60x = 482,981.40 × 202,237.20 - Step 4: Simplify right side
321,987.60x = 97,676,805,988.08 - Step 5: Solve for x
x = 97,676,805,988.08/321,987.60 - Step 6: Final answer
x = 303,355.80
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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.