Finding the Fourth Proportional to 318,800.80, 478,201.20 and 185,831.20
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Solution
The fourth proportional to 318,800.80, 478,201.20 and 185,831.20 is: 278,746.80
Step by Step Solution
- Step 1: Write the proportion equation
318,800.80 : 478,201.20 = 185,831.20 : x - Step 2: Convert to fraction form
318,800.80/478,201.20 = 185,831.20/x - Step 3: Cross multiply
318,800.80x = 478,201.20 × 185,831.20 - Step 4: Simplify right side
318,800.80x = 88,864,702,837.44 - Step 5: Solve for x
x = 88,864,702,837.44/318,800.80 - Step 6: Final answer
x = 278,746.80
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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.