Finding the Fourth Proportional to 307,911.80, 461,867.70 and 142,023.80
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Solution
The fourth proportional to 307,911.80, 461,867.70 and 142,023.80 is: 213,035.70
Step by Step Solution
- Step 1: Write the proportion equation
307,911.80 : 461,867.70 = 142,023.80 : x - Step 2: Convert to fraction form
307,911.80/461,867.70 = 142,023.80/x - Step 3: Cross multiply
307,911.80x = 461,867.70 × 142,023.80 - Step 4: Simplify right side
307,911.80x = 65,596,205,851.26 - Step 5: Solve for x
x = 65,596,205,851.26/307,911.80 - Step 6: Final answer
x = 213,035.70
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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.