Finding the Fourth Proportional to 398,318.80, 549,648.84 and 228,516.88
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Solution
The fourth proportional to 398,318.80, 549,648.84 and 228,516.88 is: 315,335.45
Step by Step Solution
- Step 1: Write the proportion equation
398,318.80 : 549,648.84 = 228,516.88 : x - Step 2: Convert to fraction form
398,318.80/549,648.84 = 228,516.88/x - Step 3: Cross multiply
398,318.80x = 549,648.84 × 228,516.88 - Step 4: Simplify right side
398,318.80x = 125,604,038,012.42 - Step 5: Solve for x
x = 125,604,038,012.42/398,318.80 - Step 6: Final answer
x = 315,335.45
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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.