Finding the Fourth Proportional to 398,504.63, 549,946.86 and 245,643.84
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Solution
The fourth proportional to 398,504.63, 549,946.86 and 245,643.84 is: 338,994.95
Step by Step Solution
- Step 1: Write the proportion equation
398,504.63 : 549,946.86 = 245,643.84 : x - Step 2: Convert to fraction form
398,504.63/549,946.86 = 245,643.84/x - Step 3: Cross multiply
398,504.63x = 549,946.86 × 245,643.84 - Step 4: Simplify right side
398,504.63x = 135,091,059,551.43 - Step 5: Solve for x
x = 135,091,059,551.43/398,504.63 - Step 6: Final answer
x = 338,994.95
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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.