Finding the Fourth Proportional to 426,852.11, 640,190.68 and 156,887.21
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Solution
The fourth proportional to 426,852.11, 640,190.68 and 156,887.21 is: 235,298.65
Step by Step Solution
- Step 1: Write the proportion equation
426,852.11 : 640,190.68 = 156,887.21 : x - Step 2: Convert to fraction form
426,852.11/640,190.68 = 156,887.21/x - Step 3: Cross multiply
426,852.11x = 640,190.68 × 156,887.21 - Step 4: Simplify right side
426,852.11x = 100,437,726,060.03 - Step 5: Solve for x
x = 100,437,726,060.03/426,852.11 - Step 6: Final answer
x = 235,298.65
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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.