Finding the Fourth Proportional to 425,765.80, 638,612.70 and 130,277.80
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Solution
The fourth proportional to 425,765.80, 638,612.70 and 130,277.80 is: 195,405.68
Step by Step Solution
- Step 1: Write the proportion equation
425,765.80 : 638,612.70 = 130,277.80 : x - Step 2: Convert to fraction form
425,765.80/638,612.70 = 130,277.80/x - Step 3: Cross multiply
425,765.80x = 638,612.70 × 130,277.80 - Step 4: Simplify right side
425,765.80x = 83,197,057,608.06 - Step 5: Solve for x
x = 83,197,057,608.06/425,765.80 - Step 6: Final answer
x = 195,405.68
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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.