Finding the Fourth Proportional to 282,780.24, 390,236.76 and 155,457.84
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Solution
The fourth proportional to 282,780.24, 390,236.76 and 155,457.84 is: 214,531.84
Step by Step Solution
- Step 1: Write the proportion equation
282,780.24 : 390,236.76 = 155,457.84 : x - Step 2: Convert to fraction form
282,780.24/390,236.76 = 155,457.84/x - Step 3: Cross multiply
282,780.24x = 390,236.76 × 155,457.84 - Step 4: Simplify right side
282,780.24x = 60,665,363,798.20 - Step 5: Solve for x
x = 60,665,363,798.20/282,780.24 - Step 6: Final answer
x = 214,531.84
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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.