Finding the Fourth Proportional to 312,115.70, 468,335.55 and 145,903.70
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Solution
The fourth proportional to 312,115.70, 468,335.55 and 145,903.70 is: 218,931.28
Step by Step Solution
- Step 1: Write the proportion equation
312,115.70 : 468,335.55 = 145,903.70 : x - Step 2: Convert to fraction form
312,115.70/468,335.55 = 145,903.70/x - Step 3: Cross multiply
312,115.70x = 468,335.55 × 145,903.70 - Step 4: Simplify right side
312,115.70x = 68,331,889,586.54 - Step 5: Solve for x
x = 68,331,889,586.54/312,115.70 - Step 6: Final answer
x = 218,931.28
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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.