Finding the Fourth Proportional to 283,060.96, 390,640.40 and 155,739.68
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Solution
The fourth proportional to 283,060.96, 390,640.40 and 155,739.68 is: 214,929.71
Step by Step Solution
- Step 1: Write the proportion equation
283,060.96 : 390,640.40 = 155,739.68 : x - Step 2: Convert to fraction form
283,060.96/390,640.40 = 155,739.68/x - Step 3: Cross multiply
283,060.96x = 390,640.40 × 155,739.68 - Step 4: Simplify right side
283,060.96x = 60,838,210,891.07 - Step 5: Solve for x
x = 60,838,210,891.07/283,060.96 - Step 6: Final answer
x = 214,929.71
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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.