Finding the Fourth Proportional to 398,056.97, 549,329.09 and 216,776.54
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Solution
The fourth proportional to 398,056.97, 549,329.09 and 216,776.54 is: 299,157.33
Step by Step Solution
- Step 1: Write the proportion equation
398,056.97 : 549,329.09 = 216,776.54 : x - Step 2: Convert to fraction form
398,056.97/549,329.09 = 216,776.54/x - Step 3: Cross multiply
398,056.97x = 549,329.09 × 216,776.54 - Step 4: Simplify right side
398,056.97x = 119,081,659,451.55 - Step 5: Solve for x
x = 119,081,659,451.55/398,056.97 - Step 6: Final answer
x = 299,157.33
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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.