Finding the Fourth Proportional to 398,412.06, 549,792.61 and 217,120.10
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Solution
The fourth proportional to 398,412.06, 549,792.61 and 217,120.10 is: 299,616.99
Step by Step Solution
- Step 1: Write the proportion equation
398,412.06 : 549,792.61 = 217,120.10 : x - Step 2: Convert to fraction form
398,412.06/549,792.61 = 217,120.10/x - Step 3: Cross multiply
398,412.06x = 549,792.61 × 217,120.10 - Step 4: Simplify right side
398,412.06x = 119,371,023,170.70 - Step 5: Solve for x
x = 119,371,023,170.70/398,412.06 - Step 6: Final answer
x = 299,616.99
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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.