Finding the Fourth Proportional to 426,947.60, 640,410.36 and 138,757.62
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Solution
The fourth proportional to 426,947.60, 640,410.36 and 138,757.62 is: 208,132.84
Step by Step Solution
- Step 1: Write the proportion equation
426,947.60 : 640,410.36 = 138,757.62 : x - Step 2: Convert to fraction form
426,947.60/640,410.36 = 138,757.62/x - Step 3: Cross multiply
426,947.60x = 640,410.36 × 138,757.62 - Step 4: Simplify right side
426,947.60x = 88,861,817,376.94 - Step 5: Solve for x
x = 88,861,817,376.94/426,947.60 - Step 6: Final answer
x = 208,132.84
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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.