Finding the Fourth Proportional to 312,178.48, 430,807.39 and 168,938.49
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Solution
The fourth proportional to 312,178.48, 430,807.39 and 168,938.49 is: 233,135.70
Step by Step Solution
- Step 1: Write the proportion equation
312,178.48 : 430,807.39 = 168,938.49 : x - Step 2: Convert to fraction form
312,178.48/430,807.39 = 168,938.49/x - Step 3: Cross multiply
312,178.48x = 430,807.39 × 168,938.49 - Step 4: Simplify right side
312,178.48x = 72,779,947,793.40 - Step 5: Solve for x
x = 72,779,947,793.40/312,178.48 - Step 6: Final answer
x = 233,135.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.