Finding the Fourth Proportional to 319,159.62, 478,810.48 and 139,274.08
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Solution
The fourth proportional to 319,159.62, 478,810.48 and 139,274.08 is: 208,942.12
Step by Step Solution
- Step 1: Write the proportion equation
319,159.62 : 478,810.48 = 139,274.08 : x - Step 2: Convert to fraction form
319,159.62/478,810.48 = 139,274.08/x - Step 3: Cross multiply
319,159.62x = 478,810.48 × 139,274.08 - Step 4: Simplify right side
319,159.62x = 66,685,889,096.36 - Step 5: Solve for x
x = 66,685,889,096.36/319,159.62 - Step 6: Final answer
x = 208,942.12
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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.