Finding the Fourth Proportional to 319,129.51, 478,765.22 and 139,244.09
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Solution
The fourth proportional to 319,129.51, 478,765.22 and 139,244.09 is: 208,897.09
Step by Step Solution
- Step 1: Write the proportion equation
319,129.51 : 478,765.22 = 139,244.09 : x - Step 2: Convert to fraction form
319,129.51/478,765.22 = 139,244.09/x - Step 3: Cross multiply
319,129.51x = 478,765.22 × 139,244.09 - Step 4: Simplify right side
319,129.51x = 66,665,225,336.83 - Step 5: Solve for x
x = 66,665,225,336.83/319,129.51 - Step 6: Final answer
x = 208,897.09
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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.