Finding the Fourth Proportional to 256,874.68, 385,312.02 and 139,290.63
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Solution
The fourth proportional to 256,874.68, 385,312.02 and 139,290.63 is: 208,935.95
Step by Step Solution
- Step 1: Write the proportion equation
256,874.68 : 385,312.02 = 139,290.63 : x - Step 2: Convert to fraction form
256,874.68/385,312.02 = 139,290.63/x - Step 3: Cross multiply
256,874.68x = 385,312.02 × 139,290.63 - Step 4: Simplify right side
256,874.68x = 53,670,354,012.37 - Step 5: Solve for x
x = 53,670,354,012.37/256,874.68 - Step 6: Final answer
x = 208,935.95
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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.