Finding the Fourth Proportional to 398,519.94, 549,946.56 and 217,235.41
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Solution
The fourth proportional to 398,519.94, 549,946.56 and 217,235.41 is: 299,778.89
Step by Step Solution
- Step 1: Write the proportion equation
398,519.94 : 549,946.56 = 217,235.41 : x - Step 2: Convert to fraction form
398,519.94/549,946.56 = 217,235.41/x - Step 3: Cross multiply
398,519.94x = 549,946.56 × 217,235.41 - Step 4: Simplify right side
398,519.94x = 119,467,866,439.69 - Step 5: Solve for x
x = 119,467,866,439.69/398,519.94 - Step 6: Final answer
x = 299,778.89
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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.