Finding the Fourth Proportional to 345,709.12, 518,563.56 and 83,053.12
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Solution
The fourth proportional to 345,709.12, 518,563.56 and 83,053.12 is: 124,579.65
Step by Step Solution
- Step 1: Write the proportion equation
345,709.12 : 518,563.56 = 83,053.12 : x - Step 2: Convert to fraction form
345,709.12/518,563.56 = 83,053.12/x - Step 3: Cross multiply
345,709.12x = 518,563.56 × 83,053.12 - Step 4: Simplify right side
345,709.12x = 43,068,321,576.31 - Step 5: Solve for x
x = 43,068,321,576.31/345,709.12 - Step 6: Final answer
x = 124,579.65
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1.5x scale
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.