Finding the Fourth Proportional to 422,805.47, 634,140.69 and 123,215.99
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Solution
The fourth proportional to 422,805.47, 634,140.69 and 123,215.99 is: 184,804.30
Step by Step Solution
- Step 1: Write the proportion equation
422,805.47 : 634,140.69 = 123,215.99 : x - Step 2: Convert to fraction form
422,805.47/634,140.69 = 123,215.99/x - Step 3: Cross multiply
422,805.47x = 634,140.69 × 123,215.99 - Step 4: Simplify right side
422,805.47x = 78,136,269,746.93 - Step 5: Solve for x
x = 78,136,269,746.93/422,805.47 - Step 6: Final answer
x = 184,804.30
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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.