Finding the Fourth Proportional to 216,439.60, 298,680.91 and 120,947.08
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Solution
The fourth proportional to 216,439.60, 298,680.91 and 120,947.08 is: 166,903.76
Step by Step Solution
- Step 1: Write the proportion equation
216,439.60 : 298,680.91 = 120,947.08 : x - Step 2: Convert to fraction form
216,439.60/298,680.91 = 120,947.08/x - Step 3: Cross multiply
216,439.60x = 298,680.91 × 120,947.08 - Step 4: Simplify right side
216,439.60x = 36,124,583,916.24 - Step 5: Solve for x
x = 36,124,583,916.24/216,439.60 - Step 6: Final answer
x = 166,903.76
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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.