Finding the Fourth Proportional to 611,339.70, 917,009.55 and 168,107.70
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Solution
The fourth proportional to 611,339.70, 917,009.55 and 168,107.70 is: 252,161.55
Step by Step Solution
- Step 1: Write the proportion equation
611,339.70 : 917,009.55 = 168,107.70 : x - Step 2: Convert to fraction form
611,339.70/917,009.55 = 168,107.70/x - Step 3: Cross multiply
611,339.70x = 917,009.55 × 168,107.70 - Step 4: Simplify right side
611,339.70x = 154,156,366,328.54 - Step 5: Solve for x
x = 154,156,366,328.54/611,339.70 - Step 6: Final answer
x = 252,161.55
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1.5x scale
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.