Finding the Fourth Proportional to 282,447.49, 389,780.60 and 155,123.08
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Solution
The fourth proportional to 282,447.49, 389,780.60 and 155,123.08 is: 214,071.53
Step by Step Solution
- Step 1: Write the proportion equation
282,447.49 : 389,780.60 = 155,123.08 : x - Step 2: Convert to fraction form
282,447.49/389,780.60 = 155,123.08/x - Step 3: Cross multiply
282,447.49x = 389,780.60 × 155,123.08 - Step 4: Simplify right side
282,447.49x = 60,463,967,196.25 - Step 5: Solve for x
x = 60,463,967,196.25/282,447.49 - Step 6: Final answer
x = 214,071.53
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1.5x scale
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.