Finding the Fourth Proportional to 398,599.28, 549,755.97 and 255,372.74
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Solution
The fourth proportional to 398,599.28, 549,755.97 and 255,372.74 is: 352,215.11
Step by Step Solution
- Step 1: Write the proportion equation
398,599.28 : 549,755.97 = 255,372.74 : x - Step 2: Convert to fraction form
398,599.28/549,755.97 = 255,372.74/x - Step 3: Cross multiply
398,599.28x = 549,755.97 × 255,372.74 - Step 4: Simplify right side
398,599.28x = 140,392,688,390.26 - Step 5: Solve for x
x = 140,392,688,390.26/398,599.28 - Step 6: Final answer
x = 352,215.11
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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.