Finding the Fourth Proportional to 398,398.26, 549,775.62 and 217,106.49
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Solution
The fourth proportional to 398,398.26, 549,775.62 and 217,106.49 is: 299,599.34
Step by Step Solution
- Step 1: Write the proportion equation
398,398.26 : 549,775.62 = 217,106.49 : x - Step 2: Convert to fraction form
398,398.26/549,775.62 = 217,106.49/x - Step 3: Cross multiply
398,398.26x = 549,775.62 × 217,106.49 - Step 4: Simplify right side
398,398.26x = 119,359,855,145.77 - Step 5: Solve for x
x = 119,359,855,145.77/398,398.26 - Step 6: Final answer
x = 299,599.34
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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.