Finding the Fourth Proportional to 398,265.62, 549,604.91 and 216,976.99
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Solution
The fourth proportional to 398,265.62, 549,604.91 and 216,976.99 is: 299,427.35
Step by Step Solution
- Step 1: Write the proportion equation
398,265.62 : 549,604.91 = 216,976.99 : x - Step 2: Convert to fraction form
398,265.62/549,604.91 = 216,976.99/x - Step 3: Cross multiply
398,265.62x = 549,604.91 × 216,976.99 - Step 4: Simplify right side
398,265.62x = 119,251,617,976.14 - Step 5: Solve for x
x = 119,251,617,976.14/398,265.62 - Step 6: Final answer
x = 299,427.35
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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.