Finding the Fourth Proportional to 398,465.81, 549,883.23 and 217,177.88
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Solution
The fourth proportional to 398,465.81, 549,883.23 and 217,177.88 is: 299,705.70
Step by Step Solution
- Step 1: Write the proportion equation
398,465.81 : 549,883.23 = 217,177.88 : x - Step 2: Convert to fraction form
398,465.81/549,883.23 = 217,177.88/x - Step 3: Cross multiply
398,465.81x = 549,883.23 × 217,177.88 - Step 4: Simplify right side
398,465.81x = 119,422,474,138.95 - Step 5: Solve for x
x = 119,422,474,138.95/398,465.81 - Step 6: Final answer
x = 299,705.70
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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.