Finding the Fourth Proportional to 307,129.23, 423,828.09 and 178,070.13
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Solution
The fourth proportional to 307,129.23, 423,828.09 and 178,070.13 is: 245,730.84
Step by Step Solution
- Step 1: Write the proportion equation
307,129.23 : 423,828.09 = 178,070.13 : x - Step 2: Convert to fraction form
307,129.23/423,828.09 = 178,070.13/x - Step 3: Cross multiply
307,129.23x = 423,828.09 × 178,070.13 - Step 4: Simplify right side
307,129.23x = 75,471,123,083.95 - Step 5: Solve for x
x = 75,471,123,083.95/307,129.23 - Step 6: Final answer
x = 245,730.84
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1.5x scale
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.