Finding the Fourth Proportional to 316,664.16, 474,945.21 and 139,138.08
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Solution
The fourth proportional to 316,664.16, 474,945.21 and 139,138.08 is: 208,684.70
Step by Step Solution
- Step 1: Write the proportion equation
316,664.16 : 474,945.21 = 139,138.08 : x - Step 2: Convert to fraction form
316,664.16/474,945.21 = 139,138.08/x - Step 3: Cross multiply
316,664.16x = 474,945.21 × 139,138.08 - Step 4: Simplify right side
316,664.16x = 66,082,964,624.60 - Step 5: Solve for x
x = 66,082,964,624.60/316,664.16 - Step 6: Final answer
x = 208,684.70
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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.